Finding the Fourth Proportional to 28,499.98, 42,752.39 and 7,442.81

Step by Step Solution

1. Step 1: Write the proportion equation
   28,499.98 : 42,752.39 = 7,442.81 : x
2. Step 2: Convert to fraction form
   28,499.98/42,752.39 = 7,442.81/x
3. Step 3: Cross multiply
   28,499.98x = 42,752.39 × 7,442.81
4. Step 4: Simplify right side
   28,499.98x = 318,197,915.82
5. Step 5: Solve for x
   x = 318,197,915.82/28,499.98
6. Step 6: Final answer
   x = 11,164.85