Finding the Fourth Proportional to 32,448, 48,674.40 and 13,980

Step by Step Solution

1. Step 1: Write the proportion equation
   32,448 : 48,674.40 = 13,980 : x
2. Step 2: Convert to fraction form
   32,448/48,674.40 = 13,980/x
3. Step 3: Cross multiply
   32,448x = 48,674.40 × 13,980
4. Step 4: Simplify right side
   32,448x = 680,468,112
5. Step 5: Solve for x
   x = 680,468,112/32,448
6. Step 6: Final answer
   x = 20,971.03