Finding the Fourth Proportional to 28,328.72, 42,499.50 and 9,354.68

Step by Step Solution

1. Step 1: Write the proportion equation
   28,328.72 : 42,499.50 = 9,354.68 : x
2. Step 2: Convert to fraction form
   28,328.72/42,499.50 = 9,354.68/x
3. Step 3: Cross multiply
   28,328.72x = 42,499.50 × 9,354.68
4. Step 4: Simplify right side
   28,328.72x = 397,569,222.66
5. Step 5: Solve for x
   x = 397,569,222.66/28,328.72
6. Step 6: Final answer
   x = 14,034.14