Finding the Fourth Proportional to 22,345.76, 30,842.06 and 15,456.61

Step by Step Solution

1. Step 1: Write the proportion equation
   22,345.76 : 30,842.06 = 15,456.61 : x
2. Step 2: Convert to fraction form
   22,345.76/30,842.06 = 15,456.61/x
3. Step 3: Cross multiply
   22,345.76x = 30,842.06 × 15,456.61
4. Step 4: Simplify right side
   22,345.76x = 476,713,784.50
5. Step 5: Solve for x
   x = 476,713,784.50/22,345.76
6. Step 6: Final answer
   x = 21,333.53