Finding the Fourth Proportional to 12,013.15, 18,026.18 and 4,998

Step by Step Solution

1. Step 1: Write the proportion equation
   12,013.15 : 18,026.18 = 4,998 : x
2. Step 2: Convert to fraction form
   12,013.15/18,026.18 = 4,998/x
3. Step 3: Cross multiply
   12,013.15x = 18,026.18 × 4,998
4. Step 4: Simplify right side
   12,013.15x = 90,094,847.64
5. Step 5: Solve for x
   x = 90,094,847.64/12,013.15
6. Step 6: Final answer
   x = 7,499.69