Finding the Fourth Proportional to 21,571.51, 32,343.86 and 9,085.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,571.51 : 32,343.86 = 9,085.10 : x
2. Step 2: Convert to fraction form
   21,571.51/32,343.86 = 9,085.10/x
3. Step 3: Cross multiply
   21,571.51x = 32,343.86 × 9,085.10
4. Step 4: Simplify right side
   21,571.51x = 293,847,157.06
5. Step 5: Solve for x
   x = 293,847,157.06/21,571.51
6. Step 6: Final answer
   x = 13,622.01