Finding the Fourth Proportional to 31,373.86, 47,066.56 and 10,315.09

Step by Step Solution

1. Step 1: Write the proportion equation
   31,373.86 : 47,066.56 = 10,315.09 : x
2. Step 2: Convert to fraction form
   31,373.86/47,066.56 = 10,315.09/x
3. Step 3: Cross multiply
   31,373.86x = 47,066.56 × 10,315.09
4. Step 4: Simplify right side
   31,373.86x = 485,495,697.62
5. Step 5: Solve for x
   x = 485,495,697.62/31,373.86
6. Step 6: Final answer
   x = 15,474.53