Finding the Fourth Proportional to 22,386.84, 30,855.78 and 15,300.96

Step by Step Solution

1. Step 1: Write the proportion equation
   22,386.84 : 30,855.78 = 15,300.96 : x
2. Step 2: Convert to fraction form
   22,386.84/30,855.78 = 15,300.96/x
3. Step 3: Cross multiply
   22,386.84x = 30,855.78 × 15,300.96
4. Step 4: Simplify right side
   22,386.84x = 472,123,055.55
5. Step 5: Solve for x
   x = 472,123,055.55/22,386.84
6. Step 6: Final answer
   x = 21,089.31