Finding the Fourth Proportional to 11,411.80, 15,750.91 and 7,425.99

Step by Step Solution

1. Step 1: Write the proportion equation
   11,411.80 : 15,750.91 = 7,425.99 : x
2. Step 2: Convert to fraction form
   11,411.80/15,750.91 = 7,425.99/x
3. Step 3: Cross multiply
   11,411.80x = 15,750.91 × 7,425.99
4. Step 4: Simplify right side
   11,411.80x = 116,966,109.43
5. Step 5: Solve for x
   x = 116,966,109.43/11,411.80
6. Step 6: Final answer
   x = 10,249.58