Finding the Fourth Proportional to 31,837.52, 47,716.99 and 13,105.87

Step by Step Solution

1. Step 1: Write the proportion equation
   31,837.52 : 47,716.99 = 13,105.87 : x
2. Step 2: Convert to fraction form
   31,837.52/47,716.99 = 13,105.87/x
3. Step 3: Cross multiply
   31,837.52x = 47,716.99 × 13,105.87
4. Step 4: Simplify right side
   31,837.52x = 625,372,667.73
5. Step 5: Solve for x
   x = 625,372,667.73/31,837.52
6. Step 6: Final answer
   x = 19,642.63