Finding the Fourth Proportional to 22,448.73, 30,978.72 and 13,016.69

Step by Step Solution

1. Step 1: Write the proportion equation
   22,448.73 : 30,978.72 = 13,016.69 : x
2. Step 2: Convert to fraction form
   22,448.73/30,978.72 = 13,016.69/x
3. Step 3: Cross multiply
   22,448.73x = 30,978.72 × 13,016.69
4. Step 4: Simplify right side
   22,448.73x = 403,240,394.84
5. Step 5: Solve for x
   x = 403,240,394.84/22,448.73
6. Step 6: Final answer
   x = 17,962.73