Finding the Fourth Proportional to 31,513.61, 47,288.86 and 17,485.37

Step by Step Solution

1. Step 1: Write the proportion equation
   31,513.61 : 47,288.86 = 17,485.37 : x
2. Step 2: Convert to fraction form
   31,513.61/47,288.86 = 17,485.37/x
3. Step 3: Cross multiply
   31,513.61x = 47,288.86 × 17,485.37
4. Step 4: Simplify right side
   31,513.61x = 826,863,213.98
5. Step 5: Solve for x
   x = 826,863,213.98/31,513.61
6. Step 6: Final answer
   x = 26,238.29