Finding the Fourth Proportional to 14,870.38, 20,521.41 and 8,155.61

Step by Step Solution

1. Step 1: Write the proportion equation
   14,870.38 : 20,521.41 = 8,155.61 : x
2. Step 2: Convert to fraction form
   14,870.38/20,521.41 = 8,155.61/x
3. Step 3: Cross multiply
   14,870.38x = 20,521.41 × 8,155.61
4. Step 4: Simplify right side
   14,870.38x = 167,364,616.61
5. Step 5: Solve for x
   x = 167,364,616.61/14,870.38
6. Step 6: Final answer
   x = 11,254.90