Finding the Fourth Proportional to 13,065.91, 18,032.52 and 7,760.74

Step by Step Solution

1. Step 1: Write the proportion equation
   13,065.91 : 18,032.52 = 7,760.74 : x
2. Step 2: Convert to fraction form
   13,065.91/18,032.52 = 7,760.74/x
3. Step 3: Cross multiply
   13,065.91x = 18,032.52 × 7,760.74
4. Step 4: Simplify right side
   13,065.91x = 139,945,679.86
5. Step 5: Solve for x
   x = 139,945,679.86/13,065.91
6. Step 6: Final answer
   x = 10,710.75