Finding the Fourth Proportional to 8,870.01, 12,240.74 and 4,891.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,870.01 : 12,240.74 = 4,891.12 : x
2. Step 2: Convert to fraction form
   8,870.01/12,240.74 = 4,891.12/x
3. Step 3: Cross multiply
   8,870.01x = 12,240.74 × 4,891.12
4. Step 4: Simplify right side
   8,870.01x = 59,870,882.34
5. Step 5: Solve for x
   x = 59,870,882.34/8,870.01
6. Step 6: Final answer
   x = 6,749.81