Finding the Fourth Proportional to 11,152.89, 15,390.27 and 6,437.07

Step by Step Solution

1. Step 1: Write the proportion equation
   11,152.89 : 15,390.27 = 6,437.07 : x
2. Step 2: Convert to fraction form
   11,152.89/15,390.27 = 6,437.07/x
3. Step 3: Cross multiply
   11,152.89x = 15,390.27 × 6,437.07
4. Step 4: Simplify right side
   11,152.89x = 99,068,245.31
5. Step 5: Solve for x
   x = 99,068,245.31/11,152.89
6. Step 6: Final answer
   x = 8,882.74