Finding the Fourth Proportional to 31,484.71, 43,435.86 and 18,735.34

Step by Step Solution

1. Step 1: Write the proportion equation
   31,484.71 : 43,435.86 = 18,735.34 : x
2. Step 2: Convert to fraction form
   31,484.71/43,435.86 = 18,735.34/x
3. Step 3: Cross multiply
   31,484.71x = 43,435.86 × 18,735.34
4. Step 4: Simplify right side
   31,484.71x = 813,785,605.29
5. Step 5: Solve for x
   x = 813,785,605.29/31,484.71
6. Step 6: Final answer
   x = 25,847.01