Finding the Fourth Proportional to 22,928.69, 31,641.94 and 13,368.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,928.69 : 31,641.94 = 13,368.31 : x
2. Step 2: Convert to fraction form
   22,928.69/31,641.94 = 13,368.31/x
3. Step 3: Cross multiply
   22,928.69x = 31,641.94 × 13,368.31
4. Step 4: Simplify right side
   22,928.69x = 422,999,303.32
5. Step 5: Solve for x
   x = 422,999,303.32/22,928.69
6. Step 6: Final answer
   x = 18,448.47