Finding the Fourth Proportional to 11,150.32, 15,388.77 and 6,434.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,150.32 : 15,388.77 = 6,434.50 : x
2. Step 2: Convert to fraction form
   11,150.32/15,388.77 = 6,434.50/x
3. Step 3: Cross multiply
   11,150.32x = 15,388.77 × 6,434.50
4. Step 4: Simplify right side
   11,150.32x = 99,019,040.57
5. Step 5: Solve for x
   x = 99,019,040.57/11,150.32
6. Step 6: Final answer
   x = 8,880.38