Finding the Fourth Proportional to 7,635.42, 10,457.92 and 7,187.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,635.42 : 10,457.92 = 7,187.10 : x
2. Step 2: Convert to fraction form
   7,635.42/10,457.92 = 7,187.10/x
3. Step 3: Cross multiply
   7,635.42x = 10,457.92 × 7,187.10
4. Step 4: Simplify right side
   7,635.42x = 75,162,116.83
5. Step 5: Solve for x
   x = 75,162,116.83/7,635.42
6. Step 6: Final answer
   x = 9,843.87