Finding the Fourth Proportional to 7,856.58, 10,842.57 and 5,499.48

Step by Step Solution

1. Step 1: Write the proportion equation
   7,856.58 : 10,842.57 = 5,499.48 : x
2. Step 2: Convert to fraction form
   7,856.58/10,842.57 = 5,499.48/x
3. Step 3: Cross multiply
   7,856.58x = 10,842.57 × 5,499.48
4. Step 4: Simplify right side
   7,856.58x = 59,628,496.86
5. Step 5: Solve for x
   x = 59,628,496.86/7,856.58
6. Step 6: Final answer
   x = 7,589.63