Finding the Fourth Proportional to 12,622.91, 17,419.68 and 7,320.87

Step by Step Solution

1. Step 1: Write the proportion equation
   12,622.91 : 17,419.68 = 7,320.87 : x
2. Step 2: Convert to fraction form
   12,622.91/17,419.68 = 7,320.87/x
3. Step 3: Cross multiply
   12,622.91x = 17,419.68 × 7,320.87
4. Step 4: Simplify right side
   12,622.91x = 127,527,212.72
5. Step 5: Solve for x
   x = 127,527,212.72/12,622.91
6. Step 6: Final answer
   x = 10,102.84