Finding the Fourth Proportional to 11,061.30, 15,248.48 and 8,404.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,061.30 : 15,248.48 = 8,404.10 : x
2. Step 2: Convert to fraction form
   11,061.30/15,248.48 = 8,404.10/x
3. Step 3: Cross multiply
   11,061.30x = 15,248.48 × 8,404.10
4. Step 4: Simplify right side
   11,061.30x = 128,149,750.77
5. Step 5: Solve for x
   x = 128,149,750.77/11,061.30
6. Step 6: Final answer
   x = 11,585.41