Finding the Fourth Proportional to 31,881.27, 47,820.69 and 8,507.51

Step by Step Solution

1. Step 1: Write the proportion equation
   31,881.27 : 47,820.69 = 8,507.51 : x
2. Step 2: Convert to fraction form
   31,881.27/47,820.69 = 8,507.51/x
3. Step 3: Cross multiply
   31,881.27x = 47,820.69 × 8,507.51
4. Step 4: Simplify right side
   31,881.27x = 406,834,759.28
5. Step 5: Solve for x
   x = 406,834,759.28/31,881.27
6. Step 6: Final answer
   x = 12,760.93