Finding the Fourth Proportional to 12,079.02, 16,642.15 and 9,040.51

Step by Step Solution

1. Step 1: Write the proportion equation
   12,079.02 : 16,642.15 = 9,040.51 : x
2. Step 2: Convert to fraction form
   12,079.02/16,642.15 = 9,040.51/x
3. Step 3: Cross multiply
   12,079.02x = 16,642.15 × 9,040.51
4. Step 4: Simplify right side
   12,079.02x = 150,453,523.50
5. Step 5: Solve for x
   x = 150,453,523.50/12,079.02
6. Step 6: Final answer
   x = 12,455.77