Finding the Fourth Proportional to 55,156.30, 82,710.15 and 21,865.30

Step by Step Solution

1. Step 1: Write the proportion equation
   55,156.30 : 82,710.15 = 21,865.30 : x
2. Step 2: Convert to fraction form
   55,156.30/82,710.15 = 21,865.30/x
3. Step 3: Cross multiply
   55,156.30x = 82,710.15 × 21,865.30
4. Step 4: Simplify right side
   55,156.30x = 1,808,482,242.80
5. Step 5: Solve for x
   x = 1,808,482,242.80/55,156.30
6. Step 6: Final answer
   x = 32,788.32