Finding the Fourth Proportional to 12,938.40, 19,382.76 and 7,375.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,938.40 : 19,382.76 = 7,375.32 : x
2. Step 2: Convert to fraction form
   12,938.40/19,382.76 = 7,375.32/x
3. Step 3: Cross multiply
   12,938.40x = 19,382.76 × 7,375.32
4. Step 4: Simplify right side
   12,938.40x = 142,954,057.48
5. Step 5: Solve for x
   x = 142,954,057.48/12,938.40
6. Step 6: Final answer
   x = 11,048.82