Finding the Fourth Proportional to 12,077.04, 18,112.72 and 3,312.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,077.04 : 18,112.72 = 3,312.64 : x
2. Step 2: Convert to fraction form
   12,077.04/18,112.72 = 3,312.64/x
3. Step 3: Cross multiply
   12,077.04x = 18,112.72 × 3,312.64
4. Step 4: Simplify right side
   12,077.04x = 60,000,920.78
5. Step 5: Solve for x
   x = 60,000,920.78/12,077.04
6. Step 6: Final answer
   x = 4,968.18