Finding the Fourth Proportional to 31,373.98, 47,066.79 and 10,315.19

Step by Step Solution

1. Step 1: Write the proportion equation
   31,373.98 : 47,066.79 = 10,315.19 : x
2. Step 2: Convert to fraction form
   31,373.98/47,066.79 = 10,315.19/x
3. Step 3: Cross multiply
   31,373.98x = 47,066.79 × 10,315.19
4. Step 4: Simplify right side
   31,373.98x = 485,502,881.54
5. Step 5: Solve for x
   x = 485,502,881.54/31,373.98
6. Step 6: Final answer
   x = 15,474.70