Finding the Fourth Proportional to 8,818.04, 13,209.42 and 5,306.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,818.04 : 13,209.42 = 5,306.10 : x
2. Step 2: Convert to fraction form
   8,818.04/13,209.42 = 5,306.10/x
3. Step 3: Cross multiply
   8,818.04x = 13,209.42 × 5,306.10
4. Step 4: Simplify right side
   8,818.04x = 70,090,503.46
5. Step 5: Solve for x
   x = 70,090,503.46/8,818.04
6. Step 6: Final answer
   x = 7,948.54