Finding the Fourth Proportional to 28,045.95, 42,059.82 and 9,320.96

Step by Step Solution

1. Step 1: Write the proportion equation
   28,045.95 : 42,059.82 = 9,320.96 : x
2. Step 2: Convert to fraction form
   28,045.95/42,059.82 = 9,320.96/x
3. Step 3: Cross multiply
   28,045.95x = 42,059.82 × 9,320.96
4. Step 4: Simplify right side
   28,045.95x = 392,037,899.83
5. Step 5: Solve for x
   x = 392,037,899.83/28,045.95
6. Step 6: Final answer
   x = 13,978.41