Finding the Fourth Proportional to 8,987.12, 12,399.30 and 5,007.48

Step by Step Solution

1. Step 1: Write the proportion equation
   8,987.12 : 12,399.30 = 5,007.48 : x
2. Step 2: Convert to fraction form
   8,987.12/12,399.30 = 5,007.48/x
3. Step 3: Cross multiply
   8,987.12x = 12,399.30 × 5,007.48
4. Step 4: Simplify right side
   8,987.12x = 62,089,246.76
5. Step 5: Solve for x
   x = 62,089,246.76/8,987.12
6. Step 6: Final answer
   x = 6,908.69