Finding the Fourth Proportional to 10,087.54, 15,124.47 and 5,153.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,087.54 : 15,124.47 = 5,153.12 : x
2. Step 2: Convert to fraction form
   10,087.54/15,124.47 = 5,153.12/x
3. Step 3: Cross multiply
   10,087.54x = 15,124.47 × 5,153.12
4. Step 4: Simplify right side
   10,087.54x = 77,938,199.60
5. Step 5: Solve for x
   x = 77,938,199.60/10,087.54
6. Step 6: Final answer
   x = 7,726.19