Finding the Fourth Proportional to 11,223.43, 15,488.35 and 6,443.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,223.43 : 15,488.35 = 6,443.55 : x
2. Step 2: Convert to fraction form
   11,223.43/15,488.35 = 6,443.55/x
3. Step 3: Cross multiply
   11,223.43x = 15,488.35 × 6,443.55
4. Step 4: Simplify right side
   11,223.43x = 99,799,941.53
5. Step 5: Solve for x
   x = 99,799,941.53/11,223.43
6. Step 6: Final answer
   x = 8,892.11