Finding the Fourth Proportional to 12,308.93, 18,464.67 and 3,988.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,308.93 : 18,464.67 = 3,988.61 : x
2. Step 2: Convert to fraction form
   12,308.93/18,464.67 = 3,988.61/x
3. Step 3: Cross multiply
   12,308.93x = 18,464.67 × 3,988.61
4. Step 4: Simplify right side
   12,308.93x = 73,648,275.09
5. Step 5: Solve for x
   x = 73,648,275.09/12,308.93
6. Step 6: Final answer
   x = 5,983.32