Finding the Fourth Proportional to 13,230,141,109.53, 18,257,363,848.08 and 7,208,696,356.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,230,141,109.53 : 18,257,363,848.08 = 7,208,696,356.72 : x
2. Step 2: Convert to fraction form
   13,230,141,109.53/18,257,363,848.08 = 7,208,696,356.72/x
3. Step 3: Cross multiply
   13,230,141,109.53x = 18,257,363,848.08 × 7,208,696,356.72
4. Step 4: Simplify right side
   13,230,141,109.53x = 131,611,792,254,921,932,800
5. Step 5: Solve for x
   x = 131,611,792,254,921,932,800/13,230,141,109.53
6. Step 6: Final answer
   x = 9,947,875,171.20