Finding the Fourth Proportional to 22,320.64, 30,801.28 and 12,384

Step by Step Solution

1. Step 1: Write the proportion equation
   22,320.64 : 30,801.28 = 12,384 : x
2. Step 2: Convert to fraction form
   22,320.64/30,801.28 = 12,384/x
3. Step 3: Cross multiply
   22,320.64x = 30,801.28 × 12,384
4. Step 4: Simplify right side
   22,320.64x = 381,443,051.52
5. Step 5: Solve for x
   x = 381,443,051.52/22,320.64
6. Step 6: Final answer
   x = 17,089.25