Finding the Fourth Proportional to 13,510.64, 18,650.76 and 7,922

Step by Step Solution

1. Step 1: Write the proportion equation
   13,510.64 : 18,650.76 = 7,922 : x
2. Step 2: Convert to fraction form
   13,510.64/18,650.76 = 7,922/x
3. Step 3: Cross multiply
   13,510.64x = 18,650.76 × 7,922
4. Step 4: Simplify right side
   13,510.64x = 147,751,320.72
5. Step 5: Solve for x
   x = 147,751,320.72/13,510.64
6. Step 6: Final answer
   x = 10,935.92