Finding the Fourth Proportional to 11,152.30, 15,390.27 and 6,436.54

Step by Step Solution

1. Step 1: Write the proportion equation
   11,152.30 : 15,390.27 = 6,436.54 : x
2. Step 2: Convert to fraction form
   11,152.30/15,390.27 = 6,436.54/x
3. Step 3: Cross multiply
   11,152.30x = 15,390.27 × 6,436.54
4. Step 4: Simplify right side
   11,152.30x = 99,060,088.47
5. Step 5: Solve for x
   x = 99,060,088.47/11,152.30
6. Step 6: Final answer
   x = 8,882.48