Finding the Fourth Proportional to 10,520,973.72, 14,528,970.51 and 9,947,795.79

Step by Step Solution

1. Step 1: Write the proportion equation
   10,520,973.72 : 14,528,970.51 = 9,947,795.79 : x
2. Step 2: Convert to fraction form
   10,520,973.72/14,528,970.51 = 9,947,795.79/x
3. Step 3: Cross multiply
   10,520,973.72x = 14,528,970.51 × 9,947,795.79
4. Step 4: Simplify right side
   10,520,973.72x = 144,531,231,663,822.47
5. Step 5: Solve for x
   x = 144,531,231,663,822.47/10,520,973.72
6. Step 6: Final answer
   x = 13,737,438.71