Finding the Fourth Proportional to 12,696.43, 17,520.22 and 7,030.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,696.43 : 17,520.22 = 7,030.78 : x
2. Step 2: Convert to fraction form
   12,696.43/17,520.22 = 7,030.78/x
3. Step 3: Cross multiply
   12,696.43x = 17,520.22 × 7,030.78
4. Step 4: Simplify right side
   12,696.43x = 123,180,812.37
5. Step 5: Solve for x
   x = 123,180,812.37/12,696.43
6. Step 6: Final answer
   x = 9,702.00