Finding the Fourth Proportional to 9,645.62, 13,308.81 and 5,870.75

Step by Step Solution

1. Step 1: Write the proportion equation
   9,645.62 : 13,308.81 = 5,870.75 : x
2. Step 2: Convert to fraction form
   9,645.62/13,308.81 = 5,870.75/x
3. Step 3: Cross multiply
   9,645.62x = 13,308.81 × 5,870.75
4. Step 4: Simplify right side
   9,645.62x = 78,132,696.31
5. Step 5: Solve for x
   x = 78,132,696.31/9,645.62
6. Step 6: Final answer
   x = 8,100.33