Finding the Fourth Proportional to 22,385.08, 30,905.76 and 13,896.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,385.08 : 30,905.76 = 13,896.10 : x
2. Step 2: Convert to fraction form
   22,385.08/30,905.76 = 13,896.10/x
3. Step 3: Cross multiply
   22,385.08x = 30,905.76 × 13,896.10
4. Step 4: Simplify right side
   22,385.08x = 429,469,531.54
5. Step 5: Solve for x
   x = 429,469,531.54/22,385.08
6. Step 6: Final answer
   x = 19,185.53