Finding the Fourth Proportional to 10,920.65, 15,075.17 and 7,522.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,920.65 : 15,075.17 = 7,522.43 : x
2. Step 2: Convert to fraction form
   10,920.65/15,075.17 = 7,522.43/x
3. Step 3: Cross multiply
   10,920.65x = 15,075.17 × 7,522.43
4. Step 4: Simplify right side
   10,920.65x = 113,401,798.08
5. Step 5: Solve for x
   x = 113,401,798.08/10,920.65
6. Step 6: Final answer
   x = 10,384.17