Finding the Fourth Proportional to 5,105.76, 7,047.17 and 3,118.01

Step by Step Solution

1. Step 1: Write the proportion equation
   5,105.76 : 7,047.17 = 3,118.01 : x
2. Step 2: Convert to fraction form
   5,105.76/7,047.17 = 3,118.01/x
3. Step 3: Cross multiply
   5,105.76x = 7,047.17 × 3,118.01
4. Step 4: Simplify right side
   5,105.76x = 21,973,095.71
5. Step 5: Solve for x
   x = 21,973,095.71/5,105.76
6. Step 6: Final answer
   x = 4,303.59