Finding the Fourth Proportional to 8,442.72, 12,653.04 and 4,538.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,442.72 : 12,653.04 = 4,538.72 : x
2. Step 2: Convert to fraction form
   8,442.72/12,653.04 = 4,538.72/x
3. Step 3: Cross multiply
   8,442.72x = 12,653.04 × 4,538.72
4. Step 4: Simplify right side
   8,442.72x = 57,428,605.71
5. Step 5: Solve for x
   x = 57,428,605.71/8,442.72
6. Step 6: Final answer
   x = 6,802.15