Finding the Fourth Proportional to 6,111.45, 9,162.32 and 2,990.12

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.45 : 9,162.32 = 2,990.12 : x
2. Step 2: Convert to fraction form
   6,111.45/9,162.32 = 2,990.12/x
3. Step 3: Cross multiply
   6,111.45x = 9,162.32 × 2,990.12
4. Step 4: Simplify right side
   6,111.45x = 27,396,375.52
5. Step 5: Solve for x
   x = 27,396,375.52/6,111.45
6. Step 6: Final answer
   x = 4,482.79