Finding the Fourth Proportional to 9,072.34, 12,521.21 and 5,537.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,072.34 : 12,521.21 = 5,537.61 : x
2. Step 2: Convert to fraction form
   9,072.34/12,521.21 = 5,537.61/x
3. Step 3: Cross multiply
   9,072.34x = 12,521.21 × 5,537.61
4. Step 4: Simplify right side
   9,072.34x = 69,337,577.71
5. Step 5: Solve for x
   x = 69,337,577.71/9,072.34
6. Step 6: Final answer
   x = 7,642.74