Finding the Fourth Proportional to 31,387.08, 47,082.24 and 8,013.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,387.08 : 47,082.24 = 8,013.72 : x
2. Step 2: Convert to fraction form
   31,387.08/47,082.24 = 8,013.72/x
3. Step 3: Cross multiply
   31,387.08x = 47,082.24 × 8,013.72
4. Step 4: Simplify right side
   31,387.08x = 377,303,888.33
5. Step 5: Solve for x
   x = 377,303,888.33/31,387.08
6. Step 6: Final answer
   x = 12,020.99