Finding the Fourth Proportional to 42,238.08, 63,359.22 and 12,653.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,238.08 : 63,359.22 = 12,653.10 : x
2. Step 2: Convert to fraction form
   42,238.08/63,359.22 = 12,653.10/x
3. Step 3: Cross multiply
   42,238.08x = 63,359.22 × 12,653.10
4. Step 4: Simplify right side
   42,238.08x = 801,690,594.03
5. Step 5: Solve for x
   x = 801,690,594.03/42,238.08
6. Step 6: Final answer
   x = 18,980.28