Finding the Fourth Proportional to 22,300.81, 30,778.25 and 13,805.64

Step by Step Solution

1. Step 1: Write the proportion equation
   22,300.81 : 30,778.25 = 13,805.64 : x
2. Step 2: Convert to fraction form
   22,300.81/30,778.25 = 13,805.64/x
3. Step 3: Cross multiply
   22,300.81x = 30,778.25 × 13,805.64
4. Step 4: Simplify right side
   22,300.81x = 424,913,370.30
5. Step 5: Solve for x
   x = 424,913,370.30/22,300.81
6. Step 6: Final answer
   x = 19,053.72