Finding the Fourth Proportional to 12,391.51, 18,587.89 and 4,995

Step by Step Solution

1. Step 1: Write the proportion equation
   12,391.51 : 18,587.89 = 4,995 : x
2. Step 2: Convert to fraction form
   12,391.51/18,587.89 = 4,995/x
3. Step 3: Cross multiply
   12,391.51x = 18,587.89 × 4,995
4. Step 4: Simplify right side
   12,391.51x = 92,846,510.55
5. Step 5: Solve for x
   x = 92,846,510.55/12,391.51
6. Step 6: Final answer
   x = 7,492.75