Finding the Fourth Proportional to 31,513.47, 47,269.25 and 12,793.05

Step by Step Solution

1. Step 1: Write the proportion equation
   31,513.47 : 47,269.25 = 12,793.05 : x
2. Step 2: Convert to fraction form
   31,513.47/47,269.25 = 12,793.05/x
3. Step 3: Cross multiply
   31,513.47x = 47,269.25 × 12,793.05
4. Step 4: Simplify right side
   31,513.47x = 604,717,878.71
5. Step 5: Solve for x
   x = 604,717,878.71/31,513.47
6. Step 6: Final answer
   x = 19,189.19