Finding the Fourth Proportional to 22,320.09, 30,799.76 and 12,758.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,320.09 : 30,799.76 = 12,758.10 : x
2. Step 2: Convert to fraction form
   22,320.09/30,799.76 = 12,758.10/x
3. Step 3: Cross multiply
   22,320.09x = 30,799.76 × 12,758.10
4. Step 4: Simplify right side
   22,320.09x = 392,946,418.06
5. Step 5: Solve for x
   x = 392,946,418.06/22,320.09
6. Step 6: Final answer
   x = 17,605.06