Finding the Fourth Proportional to 12,426.60, 17,150.16 and 7,123.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,426.60 : 17,150.16 = 7,123.08 : x
2. Step 2: Convert to fraction form
   12,426.60/17,150.16 = 7,123.08/x
3. Step 3: Cross multiply
   12,426.60x = 17,150.16 × 7,123.08
4. Step 4: Simplify right side
   12,426.60x = 122,161,961.69
5. Step 5: Solve for x
   x = 122,161,961.69/12,426.60
6. Step 6: Final answer
   x = 9,830.68