Finding the Fourth Proportional to 22,062.78, 30,357.72 and 21,537.90

Step by Step Solution

1. Step 1: Write the proportion equation
   22,062.78 : 30,357.72 = 21,537.90 : x
2. Step 2: Convert to fraction form
   22,062.78/30,357.72 = 21,537.90/x
3. Step 3: Cross multiply
   22,062.78x = 30,357.72 × 21,537.90
4. Step 4: Simplify right side
   22,062.78x = 653,841,537.59
5. Step 5: Solve for x
   x = 653,841,537.59/22,062.78
6. Step 6: Final answer
   x = 29,635.50