Finding the Fourth Proportional to 21,600.69, 32,402.78 and 6,611.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,600.69 : 32,402.78 = 6,611.10 : x
2. Step 2: Convert to fraction form
   21,600.69/32,402.78 = 6,611.10/x
3. Step 3: Cross multiply
   21,600.69x = 32,402.78 × 6,611.10
4. Step 4: Simplify right side
   21,600.69x = 214,218,018.86
5. Step 5: Solve for x
   x = 214,218,018.86/21,600.69
6. Step 6: Final answer
   x = 9,917.18