Finding the Fourth Proportional to 22,085.68, 30,464.76 and 15,787.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,085.68 : 30,464.76 = 15,787.12 : x
2. Step 2: Convert to fraction form
   22,085.68/30,464.76 = 15,787.12/x
3. Step 3: Cross multiply
   22,085.68x = 30,464.76 × 15,787.12
4. Step 4: Simplify right side
   22,085.68x = 480,950,821.89
5. Step 5: Solve for x
   x = 480,950,821.89/22,085.68
6. Step 6: Final answer
   x = 21,776.59