Finding the Fourth Proportional to 11,422.20, 17,119.59 and 5,878.16

Step by Step Solution

1. Step 1: Write the proportion equation
   11,422.20 : 17,119.59 = 5,878.16 : x
2. Step 2: Convert to fraction form
   11,422.20/17,119.59 = 5,878.16/x
3. Step 3: Cross multiply
   11,422.20x = 17,119.59 × 5,878.16
4. Step 4: Simplify right side
   11,422.20x = 100,631,689.15
5. Step 5: Solve for x
   x = 100,631,689.15/11,422.20
6. Step 6: Final answer
   x = 8,810.18