Finding the Fourth Proportional to 12,522.42, 17,279.73 and 7,485.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,522.42 : 17,279.73 = 7,485.63 : x
2. Step 2: Convert to fraction form
   12,522.42/17,279.73 = 7,485.63/x
3. Step 3: Cross multiply
   12,522.42x = 17,279.73 × 7,485.63
4. Step 4: Simplify right side
   12,522.42x = 129,349,665.28
5. Step 5: Solve for x
   x = 129,349,665.28/12,522.42
6. Step 6: Final answer
   x = 10,329.45