Finding the Fourth Proportional to 31,686.09, 43,726.27 and 17,538.63

Step by Step Solution

1. Step 1: Write the proportion equation
   31,686.09 : 43,726.27 = 17,538.63 : x
2. Step 2: Convert to fraction form
   31,686.09/43,726.27 = 17,538.63/x
3. Step 3: Cross multiply
   31,686.09x = 43,726.27 × 17,538.63
4. Step 4: Simplify right side
   31,686.09x = 766,898,870.81
5. Step 5: Solve for x
   x = 766,898,870.81/31,686.09
6. Step 6: Final answer
   x = 24,203.01