Finding the Fourth Proportional to 8,749.01, 13,118.69 and 5,978.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,749.01 : 13,118.69 = 5,978.81 : x
2. Step 2: Convert to fraction form
   8,749.01/13,118.69 = 5,978.81/x
3. Step 3: Cross multiply
   8,749.01x = 13,118.69 × 5,978.81
4. Step 4: Simplify right side
   8,749.01x = 78,434,202.70
5. Step 5: Solve for x
   x = 78,434,202.70/8,749.01
6. Step 6: Final answer
   x = 8,964.92