Finding the Fourth Proportional to 21,550.66, 32,259.15 and 11,665.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,550.66 : 32,259.15 = 11,665.42 : x
2. Step 2: Convert to fraction form
   21,550.66/32,259.15 = 11,665.42/x
3. Step 3: Cross multiply
   21,550.66x = 32,259.15 × 11,665.42
4. Step 4: Simplify right side
   21,550.66x = 376,316,533.59
5. Step 5: Solve for x
   x = 376,316,533.59/21,550.66
6. Step 6: Final answer
   x = 17,461.95