Finding the Fourth Proportional to 22,278.06, 30,742.83 and 13,320.27

Step by Step Solution

1. Step 1: Write the proportion equation
   22,278.06 : 30,742.83 = 13,320.27 : x
2. Step 2: Convert to fraction form
   22,278.06/30,742.83 = 13,320.27/x
3. Step 3: Cross multiply
   22,278.06x = 30,742.83 × 13,320.27
4. Step 4: Simplify right side
   22,278.06x = 409,502,796.16
5. Step 5: Solve for x
   x = 409,502,796.16/22,278.06
6. Step 6: Final answer
   x = 18,381.44