Finding the Fourth Proportional to 13,063.88, 18,025.62 and 7,760.36

Step by Step Solution

1. Step 1: Write the proportion equation
   13,063.88 : 18,025.62 = 7,760.36 : x
2. Step 2: Convert to fraction form
   13,063.88/18,025.62 = 7,760.36/x
3. Step 3: Cross multiply
   13,063.88x = 18,025.62 × 7,760.36
4. Step 4: Simplify right side
   13,063.88x = 139,885,300.42
5. Step 5: Solve for x
   x = 139,885,300.42/13,063.88
6. Step 6: Final answer
   x = 10,707.79