Finding the Fourth Proportional to 9,856.32, 13,607.04 and 7,835.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,856.32 : 13,607.04 = 7,835.76 : x
2. Step 2: Convert to fraction form
   9,856.32/13,607.04 = 7,835.76/x
3. Step 3: Cross multiply
   9,856.32x = 13,607.04 × 7,835.76
4. Step 4: Simplify right side
   9,856.32x = 106,621,499.75
5. Step 5: Solve for x
   x = 106,621,499.75/9,856.32
6. Step 6: Final answer
   x = 10,817.58