Finding the Fourth Proportional to 8,987.75, 12,401.52 and 5,211.23

Step by Step Solution

1. Step 1: Write the proportion equation
   8,987.75 : 12,401.52 = 5,211.23 : x
2. Step 2: Convert to fraction form
   8,987.75/12,401.52 = 5,211.23/x
3. Step 3: Cross multiply
   8,987.75x = 12,401.52 × 5,211.23
4. Step 4: Simplify right side
   8,987.75x = 64,627,111.06
5. Step 5: Solve for x
   x = 64,627,111.06/8,987.75
6. Step 6: Final answer
   x = 7,190.58