Finding the Fourth Proportional to 9,862.92, 13,595.72 and 7,870.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,862.92 : 13,595.72 = 7,870.32 : x
2. Step 2: Convert to fraction form
   9,862.92/13,595.72 = 7,870.32/x
3. Step 3: Cross multiply
   9,862.92x = 13,595.72 × 7,870.32
4. Step 4: Simplify right side
   9,862.92x = 107,002,627.68
5. Step 5: Solve for x
   x = 107,002,627.68/9,862.92
6. Step 6: Final answer
   x = 10,848.98