Finding the Fourth Proportional to 22,101.42, 30,529.80 and 20,526.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,101.42 : 30,529.80 = 20,526.78 : x
2. Step 2: Convert to fraction form
   22,101.42/30,529.80 = 20,526.78/x
3. Step 3: Cross multiply
   22,101.42x = 30,529.80 × 20,526.78
4. Step 4: Simplify right side
   22,101.42x = 626,678,488.04
5. Step 5: Solve for x
   x = 626,678,488.04/22,101.42
6. Step 6: Final answer
   x = 28,354.67