Finding the Fourth Proportional to 21,995.09, 32,985.69 and 7,200.61

Step by Step Solution

1. Step 1: Write the proportion equation
   21,995.09 : 32,985.69 = 7,200.61 : x
2. Step 2: Convert to fraction form
   21,995.09/32,985.69 = 7,200.61/x
3. Step 3: Cross multiply
   21,995.09x = 32,985.69 × 7,200.61
4. Step 4: Simplify right side
   21,995.09x = 237,516,906.34
5. Step 5: Solve for x
   x = 237,516,906.34/21,995.09
6. Step 6: Final answer
   x = 10,798.63