Finding the Fourth Proportional to 8,849.74, 12,211.86 and 5,492.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,849.74 : 12,211.86 = 5,492.20 : x
2. Step 2: Convert to fraction form
   8,849.74/12,211.86 = 5,492.20/x
3. Step 3: Cross multiply
   8,849.74x = 12,211.86 × 5,492.20
4. Step 4: Simplify right side
   8,849.74x = 67,069,977.49
5. Step 5: Solve for x
   x = 67,069,977.49/8,849.74
6. Step 6: Final answer
   x = 7,578.75