Finding the Fourth Proportional to 31,373.01, 47,047.82 and 12,646.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,373.01 : 47,047.82 = 12,646.72 : x
2. Step 2: Convert to fraction form
   31,373.01/47,047.82 = 12,646.72/x
3. Step 3: Cross multiply
   31,373.01x = 47,047.82 × 12,646.72
4. Step 4: Simplify right side
   31,373.01x = 595,000,606.15
5. Step 5: Solve for x
   x = 595,000,606.15/31,373.01
6. Step 6: Final answer
   x = 18,965.37