Finding the Fourth Proportional to 12,461.42, 17,189.16 and 7,422.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,461.42 : 17,189.16 = 7,422.32 : x
2. Step 2: Convert to fraction form
   12,461.42/17,189.16 = 7,422.32/x
3. Step 3: Cross multiply
   12,461.42x = 17,189.16 × 7,422.32
4. Step 4: Simplify right side
   12,461.42x = 127,583,446.05
5. Step 5: Solve for x
   x = 127,583,446.05/12,461.42
6. Step 6: Final answer
   x = 10,238.28