Finding the Fourth Proportional to 22,345.67, 30,783.85 and 15,618.83

Step by Step Solution

1. Step 1: Write the proportion equation
   22,345.67 : 30,783.85 = 15,618.83 : x
2. Step 2: Convert to fraction form
   22,345.67/30,783.85 = 15,618.83/x
3. Step 3: Cross multiply
   22,345.67x = 30,783.85 × 15,618.83
4. Step 4: Simplify right side
   22,345.67x = 480,807,526.93
5. Step 5: Solve for x
   x = 480,807,526.93/22,345.67
6. Step 6: Final answer
   x = 21,516.81