Finding the Fourth Proportional to 14,388.38, 19,855.86 and 8,100.74

Step by Step Solution

1. Step 1: Write the proportion equation
   14,388.38 : 19,855.86 = 8,100.74 : x
2. Step 2: Convert to fraction form
   14,388.38/19,855.86 = 8,100.74/x
3. Step 3: Cross multiply
   14,388.38x = 19,855.86 × 8,100.74
4. Step 4: Simplify right side
   14,388.38x = 160,847,159.34
5. Step 5: Solve for x
   x = 160,847,159.34/14,388.38
6. Step 6: Final answer
   x = 11,178.96