Finding the Fourth Proportional to 8,870.02, 12,240.54 and 4,891.06

Step by Step Solution

1. Step 1: Write the proportion equation
   8,870.02 : 12,240.54 = 4,891.06 : x
2. Step 2: Convert to fraction form
   8,870.02/12,240.54 = 4,891.06/x
3. Step 3: Cross multiply
   8,870.02x = 12,240.54 × 4,891.06
4. Step 4: Simplify right side
   8,870.02x = 59,869,215.57
5. Step 5: Solve for x
   x = 59,869,215.57/8,870.02
6. Step 6: Final answer
   x = 6,749.61