Finding the Fourth Proportional to 21,440.06, 32,168.76 and 9,758.78

Step by Step Solution

1. Step 1: Write the proportion equation
   21,440.06 : 32,168.76 = 9,758.78 : x
2. Step 2: Convert to fraction form
   21,440.06/32,168.76 = 9,758.78/x
3. Step 3: Cross multiply
   21,440.06x = 32,168.76 × 9,758.78
4. Step 4: Simplify right side
   21,440.06x = 313,927,851.71
5. Step 5: Solve for x
   x = 313,927,851.71/21,440.06
6. Step 6: Final answer
   x = 14,642.12