Finding the Fourth Proportional to 55,134, 82,701.81 and 13,581

Step by Step Solution

1. Step 1: Write the proportion equation
   55,134 : 82,701.81 = 13,581 : x
2. Step 2: Convert to fraction form
   55,134/82,701.81 = 13,581/x
3. Step 3: Cross multiply
   55,134x = 82,701.81 × 13,581
4. Step 4: Simplify right side
   55,134x = 1,123,173,281.61
5. Step 5: Solve for x
   x = 1,123,173,281.61/55,134
6. Step 6: Final answer
   x = 20,371.70