Finding the Fourth Proportional to 6,111.69, 9,164.43 and 2,987.02

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.69 : 9,164.43 = 2,987.02 : x
2. Step 2: Convert to fraction form
   6,111.69/9,164.43 = 2,987.02/x
3. Step 3: Cross multiply
   6,111.69x = 9,164.43 × 2,987.02
4. Step 4: Simplify right side
   6,111.69x = 27,374,335.70
5. Step 5: Solve for x
   x = 27,374,335.70/6,111.69
6. Step 6: Final answer
   x = 4,479.02