Finding the Fourth Proportional to 13,525.62, 18,665.72 and 7,557.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,525.62 : 18,665.72 = 7,557.94 : x
2. Step 2: Convert to fraction form
   13,525.62/18,665.72 = 7,557.94/x
3. Step 3: Cross multiply
   13,525.62x = 18,665.72 × 7,557.94
4. Step 4: Simplify right side
   13,525.62x = 141,074,391.82
5. Step 5: Solve for x
   x = 141,074,391.82/13,525.62
6. Step 6: Final answer
   x = 10,430.16