Finding the Fourth Proportional to 22,400.67, 30,913.98 and 13,905.54

Step by Step Solution

1. Step 1: Write the proportion equation
   22,400.67 : 30,913.98 = 13,905.54 : x
2. Step 2: Convert to fraction form
   22,400.67/30,913.98 = 13,905.54/x
3. Step 3: Cross multiply
   22,400.67x = 30,913.98 × 13,905.54
4. Step 4: Simplify right side
   22,400.67x = 429,875,585.45
5. Step 5: Solve for x
   x = 429,875,585.45/22,400.67
6. Step 6: Final answer
   x = 19,190.30