Finding the Fourth Proportional to 11,151.50, 15,388.71 and 6,115.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,151.50 : 15,388.71 = 6,115.59 : x
2. Step 2: Convert to fraction form
   11,151.50/15,388.71 = 6,115.59/x
3. Step 3: Cross multiply
   11,151.50x = 15,388.71 × 6,115.59
4. Step 4: Simplify right side
   11,151.50x = 94,111,040.99
5. Step 5: Solve for x
   x = 94,111,040.99/11,151.50
6. Step 6: Final answer
   x = 8,439.32