Finding the Fourth Proportional to 22,164.60, 30,524.94 and 21,680.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,164.60 : 30,524.94 = 21,680.76 : x
2. Step 2: Convert to fraction form
   22,164.60/30,524.94 = 21,680.76/x
3. Step 3: Cross multiply
   22,164.60x = 30,524.94 × 21,680.76
4. Step 4: Simplify right side
   22,164.60x = 661,803,898.15
5. Step 5: Solve for x
   x = 661,803,898.15/22,164.60
6. Step 6: Final answer
   x = 29,858.60