Finding the Fourth Proportional to 7,771.61, 10,727.24 and 7,374.81

Step by Step Solution

1. Step 1: Write the proportion equation
   7,771.61 : 10,727.24 = 7,374.81 : x
2. Step 2: Convert to fraction form
   7,771.61/10,727.24 = 7,374.81/x
3. Step 3: Cross multiply
   7,771.61x = 10,727.24 × 7,374.81
4. Step 4: Simplify right side
   7,771.61x = 79,111,360.18
5. Step 5: Solve for x
   x = 79,111,360.18/7,771.61
6. Step 6: Final answer
   x = 10,179.53