Finding the Fourth Proportional to 42,513.52, 63,772.76 and 12,932.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,513.52 : 63,772.76 = 12,932.40 : x
2. Step 2: Convert to fraction form
   42,513.52/63,772.76 = 12,932.40/x
3. Step 3: Cross multiply
   42,513.52x = 63,772.76 × 12,932.40
4. Step 4: Simplify right side
   42,513.52x = 824,734,841.42
5. Step 5: Solve for x
   x = 824,734,841.42/42,513.52
6. Step 6: Final answer
   x = 19,399.35