Finding the Fourth Proportional to 11,397.69, 15,731.43 and 7,411.86

Step by Step Solution

1. Step 1: Write the proportion equation
   11,397.69 : 15,731.43 = 7,411.86 : x
2. Step 2: Convert to fraction form
   11,397.69/15,731.43 = 7,411.86/x
3. Step 3: Cross multiply
   11,397.69x = 15,731.43 × 7,411.86
4. Step 4: Simplify right side
   11,397.69x = 116,599,156.76
5. Step 5: Solve for x
   x = 116,599,156.76/11,397.69
6. Step 6: Final answer
   x = 10,230.07