Finding the Fourth Proportional to 21,396.71, 32,110.83 and 10,152.09

Step by Step Solution

1. Step 1: Write the proportion equation
   21,396.71 : 32,110.83 = 10,152.09 : x
2. Step 2: Convert to fraction form
   21,396.71/32,110.83 = 10,152.09/x
3. Step 3: Cross multiply
   21,396.71x = 32,110.83 × 10,152.09
4. Step 4: Simplify right side
   21,396.71x = 325,992,036.13
5. Step 5: Solve for x
   x = 325,992,036.13/21,396.71
6. Step 6: Final answer
   x = 15,235.62