Finding the Fourth Proportional to 12,422.16, 17,142.51 and 7,045.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,422.16 : 17,142.51 = 7,045.62 : x
2. Step 2: Convert to fraction form
   12,422.16/17,142.51 = 7,045.62/x
3. Step 3: Cross multiply
   12,422.16x = 17,142.51 × 7,045.62
4. Step 4: Simplify right side
   12,422.16x = 120,779,611.31
5. Step 5: Solve for x
   x = 120,779,611.31/12,422.16
6. Step 6: Final answer
   x = 9,722.92