Finding the Fourth Proportional to 22,010.72, 30,374.52 and 11,939

Step by Step Solution

1. Step 1: Write the proportion equation
   22,010.72 : 30,374.52 = 11,939 : x
2. Step 2: Convert to fraction form
   22,010.72/30,374.52 = 11,939/x
3. Step 3: Cross multiply
   22,010.72x = 30,374.52 × 11,939
4. Step 4: Simplify right side
   22,010.72x = 362,641,394.28
5. Step 5: Solve for x
   x = 362,641,394.28/22,010.72
6. Step 6: Final answer
   x = 16,475.67