Finding the Fourth Proportional to 28,085.42, 42,114.02 and 9,358.90

Step by Step Solution

1. Step 1: Write the proportion equation
   28,085.42 : 42,114.02 = 9,358.90 : x
2. Step 2: Convert to fraction form
   28,085.42/42,114.02 = 9,358.90/x
3. Step 3: Cross multiply
   28,085.42x = 42,114.02 × 9,358.90
4. Step 4: Simplify right side
   28,085.42x = 394,140,901.78
5. Step 5: Solve for x
   x = 394,140,901.78/28,085.42
6. Step 6: Final answer
   x = 14,033.65