Finding the Fourth Proportional to 7,762.68, 10,705.50 and 5,109.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,762.68 : 10,705.50 = 5,109.12 : x
2. Step 2: Convert to fraction form
   7,762.68/10,705.50 = 5,109.12/x
3. Step 3: Cross multiply
   7,762.68x = 10,705.50 × 5,109.12
4. Step 4: Simplify right side
   7,762.68x = 54,695,684.16
5. Step 5: Solve for x
   x = 54,695,684.16/7,762.68
6. Step 6: Final answer
   x = 7,045.98