Finding the Fourth Proportional to 9,123.72, 12,587.64 and 7,442.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.72 : 12,587.64 = 7,442.22 : x
2. Step 2: Convert to fraction form
   9,123.72/12,587.64 = 7,442.22/x
3. Step 3: Cross multiply
   9,123.72x = 12,587.64 × 7,442.22
4. Step 4: Simplify right side
   9,123.72x = 93,679,986.16
5. Step 5: Solve for x
   x = 93,679,986.16/9,123.72
6. Step 6: Final answer
   x = 10,267.74