Finding the Fourth Proportional to 31,654.82, 47,464.70 and 12,947.99

Step by Step Solution

1. Step 1: Write the proportion equation
   31,654.82 : 47,464.70 = 12,947.99 : x
2. Step 2: Convert to fraction form
   31,654.82/47,464.70 = 12,947.99/x
3. Step 3: Cross multiply
   31,654.82x = 47,464.70 × 12,947.99
4. Step 4: Simplify right side
   31,654.82x = 614,572,611.98
5. Step 5: Solve for x
   x = 614,572,611.98/31,654.82
6. Step 6: Final answer
   x = 19,414.82