Finding the Fourth Proportional to 21,390.42, 32,087.25 and 5,808.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,390.42 : 32,087.25 = 5,808.18 : x
2. Step 2: Convert to fraction form
   21,390.42/32,087.25 = 5,808.18/x
3. Step 3: Cross multiply
   21,390.42x = 32,087.25 × 5,808.18
4. Step 4: Simplify right side
   21,390.42x = 186,368,523.71
5. Step 5: Solve for x
   x = 186,368,523.71/21,390.42
6. Step 6: Final answer
   x = 8,712.71