Finding the Fourth Proportional to 22,422.61, 30,719.12 and 21,581.83

Step by Step Solution

1. Step 1: Write the proportion equation
   22,422.61 : 30,719.12 = 21,581.83 : x
2. Step 2: Convert to fraction form
   22,422.61/30,719.12 = 21,581.83/x
3. Step 3: Cross multiply
   22,422.61x = 30,719.12 × 21,581.83
4. Step 4: Simplify right side
   22,422.61x = 662,974,671.99
5. Step 5: Solve for x
   x = 662,974,671.99/22,422.61
6. Step 6: Final answer
   x = 29,567.25