Finding the Fourth Proportional to 12,964.32, 17,890.96 and 7,375.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,964.32 : 17,890.96 = 7,375.28 : x
2. Step 2: Convert to fraction form
   12,964.32/17,890.96 = 7,375.28/x
3. Step 3: Cross multiply
   12,964.32x = 17,890.96 × 7,375.28
4. Step 4: Simplify right side
   12,964.32x = 131,950,839.47
5. Step 5: Solve for x
   x = 131,950,839.47/12,964.32
6. Step 6: Final answer
   x = 10,178.00