Finding the Fourth Proportional to 11,726.64, 16,173.90 and 7,479

Step by Step Solution

1. Step 1: Write the proportion equation
   11,726.64 : 16,173.90 = 7,479 : x
2. Step 2: Convert to fraction form
   11,726.64/16,173.90 = 7,479/x
3. Step 3: Cross multiply
   11,726.64x = 16,173.90 × 7,479
4. Step 4: Simplify right side
   11,726.64x = 120,964,598.10
5. Step 5: Solve for x
   x = 120,964,598.10/11,726.64
6. Step 6: Final answer
   x = 10,315.37