Finding the Fourth Proportional to 13,153.76, 18,152.32 and 7,185.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,153.76 : 18,152.32 = 7,185.48 : x
2. Step 2: Convert to fraction form
   13,153.76/18,152.32 = 7,185.48/x
3. Step 3: Cross multiply
   13,153.76x = 18,152.32 × 7,185.48
4. Step 4: Simplify right side
   13,153.76x = 130,433,132.31
5. Step 5: Solve for x
   x = 130,433,132.31/13,153.76
6. Step 6: Final answer
   x = 9,916.03