Finding the Fourth Proportional to 22,820.43, 31,513.74 and 21,577.94

Step by Step Solution

1. Step 1: Write the proportion equation
   22,820.43 : 31,513.74 = 21,577.94 : x
2. Step 2: Convert to fraction form
   22,820.43/31,513.74 = 21,577.94/x
3. Step 3: Cross multiply
   22,820.43x = 31,513.74 × 21,577.94
4. Step 4: Simplify right side
   22,820.43x = 680,001,433.33
5. Step 5: Solve for x
   x = 680,001,433.33/22,820.43
6. Step 6: Final answer
   x = 29,797.92