Finding the Fourth Proportional to 21,600.72, 32,381.64 and 7,746.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,600.72 : 32,381.64 = 7,746.48 : x
2. Step 2: Convert to fraction form
   21,600.72/32,381.64 = 7,746.48/x
3. Step 3: Cross multiply
   21,600.72x = 32,381.64 × 7,746.48
4. Step 4: Simplify right side
   21,600.72x = 250,843,726.63
5. Step 5: Solve for x
   x = 250,843,726.63/21,600.72
6. Step 6: Final answer
   x = 11,612.75