Finding the Fourth Proportional to 22,334.64, 30,820.32 and 12,261

Step by Step Solution

1. Step 1: Write the proportion equation
   22,334.64 : 30,820.32 = 12,261 : x
2. Step 2: Convert to fraction form
   22,334.64/30,820.32 = 12,261/x
3. Step 3: Cross multiply
   22,334.64x = 30,820.32 × 12,261
4. Step 4: Simplify right side
   22,334.64x = 377,887,943.52
5. Step 5: Solve for x
   x = 377,887,943.52/22,334.64
6. Step 6: Final answer
   x = 16,919.37