Finding the Fourth Proportional to 8,978.24, 12,389.96 and 4,999.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,978.24 : 12,389.96 = 4,999.32 : x
2. Step 2: Convert to fraction form
   8,978.24/12,389.96 = 4,999.32/x
3. Step 3: Cross multiply
   8,978.24x = 12,389.96 × 4,999.32
4. Step 4: Simplify right side
   8,978.24x = 61,941,387.33
5. Step 5: Solve for x
   x = 61,941,387.33/8,978.24
6. Step 6: Final answer
   x = 6,899.05