Finding the Fourth Proportional to 55,288.05, 82,869.95 and 21,999.15

Step by Step Solution

1. Step 1: Write the proportion equation
   55,288.05 : 82,869.95 = 21,999.15 : x
2. Step 2: Convert to fraction form
   55,288.05/82,869.95 = 21,999.15/x
3. Step 3: Cross multiply
   55,288.05x = 82,869.95 × 21,999.15
4. Step 4: Simplify right side
   55,288.05x = 1,823,068,350.55
5. Step 5: Solve for x
   x = 1,823,068,350.55/55,288.05
6. Step 6: Final answer
   x = 32,974.00