Finding the Fourth Proportional to 21,510.53, 32,258.51 and 8,180.35

Step by Step Solution

1. Step 1: Write the proportion equation
   21,510.53 : 32,258.51 = 8,180.35 : x
2. Step 2: Convert to fraction form
   21,510.53/32,258.51 = 8,180.35/x
3. Step 3: Cross multiply
   21,510.53x = 32,258.51 × 8,180.35
4. Step 4: Simplify right side
   21,510.53x = 263,886,005.88
5. Step 5: Solve for x
   x = 263,886,005.88/21,510.53
6. Step 6: Final answer
   x = 12,267.76