Finding the Fourth Proportional to 16,976.40, 23,430.24 and 9,902.82

Step by Step Solution

1. Step 1: Write the proportion equation
   16,976.40 : 23,430.24 = 9,902.82 : x
2. Step 2: Convert to fraction form
   16,976.40/23,430.24 = 9,902.82/x
3. Step 3: Cross multiply
   16,976.40x = 23,430.24 × 9,902.82
4. Step 4: Simplify right side
   16,976.40x = 232,025,449.28
5. Step 5: Solve for x
   x = 232,025,449.28/16,976.40
6. Step 6: Final answer
   x = 13,667.53