Finding the Fourth Proportional to 12,478.38, 17,217.56 and 7,303.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,478.38 : 17,217.56 = 7,303.29 : x
2. Step 2: Convert to fraction form
   12,478.38/17,217.56 = 7,303.29/x
3. Step 3: Cross multiply
   12,478.38x = 17,217.56 × 7,303.29
4. Step 4: Simplify right side
   12,478.38x = 125,744,833.77
5. Step 5: Solve for x
   x = 125,744,833.77/12,478.38
6. Step 6: Final answer
   x = 10,077.02