Finding the Fourth Proportional to 13,029.54, 17,978.00 and 7,726.07

Step by Step Solution

1. Step 1: Write the proportion equation
   13,029.54 : 17,978.00 = 7,726.07 : x
2. Step 2: Convert to fraction form
   13,029.54/17,978.00 = 7,726.07/x
3. Step 3: Cross multiply
   13,029.54x = 17,978.00 × 7,726.07
4. Step 4: Simplify right side
   13,029.54x = 138,899,157.94
5. Step 5: Solve for x
   x = 138,899,157.94/13,029.54
6. Step 6: Final answer
   x = 10,660.33