Finding the Fourth Proportional to 22,402.76, 30,914.35 and 12,842.53

Step by Step Solution

1. Step 1: Write the proportion equation
   22,402.76 : 30,914.35 = 12,842.53 : x
2. Step 2: Convert to fraction form
   22,402.76/30,914.35 = 12,842.53/x
3. Step 3: Cross multiply
   22,402.76x = 30,914.35 × 12,842.53
4. Step 4: Simplify right side
   22,402.76x = 397,018,357.91
5. Step 5: Solve for x
   x = 397,018,357.91/22,402.76
6. Step 6: Final answer
   x = 17,721.85