Finding the Fourth Proportional to 7,817.10, 10,776.42 and 5,575.14

Step by Step Solution

1. Step 1: Write the proportion equation
   7,817.10 : 10,776.42 = 5,575.14 : x
2. Step 2: Convert to fraction form
   7,817.10/10,776.42 = 5,575.14/x
3. Step 3: Cross multiply
   7,817.10x = 10,776.42 × 5,575.14
4. Step 4: Simplify right side
   7,817.10x = 60,080,050.20
5. Step 5: Solve for x
   x = 60,080,050.20/7,817.10
6. Step 6: Final answer
   x = 7,685.72