Finding the Fourth Proportional to 12,830.62, 17,706.06 and 7,165.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,830.62 : 17,706.06 = 7,165.46 : x
2. Step 2: Convert to fraction form
   12,830.62/17,706.06 = 7,165.46/x
3. Step 3: Cross multiply
   12,830.62x = 17,706.06 × 7,165.46
4. Step 4: Simplify right side
   12,830.62x = 126,872,064.69
5. Step 5: Solve for x
   x = 126,872,064.69/12,830.62
6. Step 6: Final answer
   x = 9,888.23