Finding the Fourth Proportional to 12,641.76, 17,443.92 and 7,335.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,641.76 : 17,443.92 = 7,335.80 : x
2. Step 2: Convert to fraction form
   12,641.76/17,443.92 = 7,335.80/x
3. Step 3: Cross multiply
   12,641.76x = 17,443.92 × 7,335.80
4. Step 4: Simplify right side
   12,641.76x = 127,965,108.34
5. Step 5: Solve for x
   x = 127,965,108.34/12,641.76
6. Step 6: Final answer
   x = 10,122.41