Finding the Fourth Proportional to 14,103.42, 21,155.58 and 4,242.78

Step by Step Solution

1. Step 1: Write the proportion equation
   14,103.42 : 21,155.58 = 4,242.78 : x
2. Step 2: Convert to fraction form
   14,103.42/21,155.58 = 4,242.78/x
3. Step 3: Cross multiply
   14,103.42x = 21,155.58 × 4,242.78
4. Step 4: Simplify right side
   14,103.42x = 89,758,471.71
5. Step 5: Solve for x
   x = 89,758,471.71/14,103.42
6. Step 6: Final answer
   x = 6,364.31