Finding the Fourth Proportional to 12,412.80, 17,123.94 and 7,374.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,412.80 : 17,123.94 = 7,374.15 : x
2. Step 2: Convert to fraction form
   12,412.80/17,123.94 = 7,374.15/x
3. Step 3: Cross multiply
   12,412.80x = 17,123.94 × 7,374.15
4. Step 4: Simplify right side
   12,412.80x = 126,274,502.15
5. Step 5: Solve for x
   x = 126,274,502.15/12,412.80
6. Step 6: Final answer
   x = 10,172.93