Finding the Fourth Proportional to 12,922.50, 17,830.29 and 7,615.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,922.50 : 17,830.29 = 7,615.38 : x
2. Step 2: Convert to fraction form
   12,922.50/17,830.29 = 7,615.38/x
3. Step 3: Cross multiply
   12,922.50x = 17,830.29 × 7,615.38
4. Step 4: Simplify right side
   12,922.50x = 135,784,433.86
5. Step 5: Solve for x
   x = 135,784,433.86/12,922.50
6. Step 6: Final answer
   x = 10,507.60