Finding the Fourth Proportional to 9,818.81, 13,550.19 and 5,570.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,818.81 : 13,550.19 = 5,570.16 : x
2. Step 2: Convert to fraction form
   9,818.81/13,550.19 = 5,570.16/x
3. Step 3: Cross multiply
   9,818.81x = 13,550.19 × 5,570.16
4. Step 4: Simplify right side
   9,818.81x = 75,476,726.33
5. Step 5: Solve for x
   x = 75,476,726.33/9,818.81
6. Step 6: Final answer
   x = 7,686.95