Finding the Fourth Proportional to 19,040.56, 26,275.98 and 10,657

Step by Step Solution

1. Step 1: Write the proportion equation
   19,040.56 : 26,275.98 = 10,657 : x
2. Step 2: Convert to fraction form
   19,040.56/26,275.98 = 10,657/x
3. Step 3: Cross multiply
   19,040.56x = 26,275.98 × 10,657
4. Step 4: Simplify right side
   19,040.56x = 280,023,118.86
5. Step 5: Solve for x
   x = 280,023,118.86/19,040.56
6. Step 6: Final answer
   x = 14,706.66