Finding the Fourth Proportional to 21,150.95, 31,723.67 and 10,064.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,150.95 : 31,723.67 = 10,064.69 : x
2. Step 2: Convert to fraction form
   21,150.95/31,723.67 = 10,064.69/x
3. Step 3: Cross multiply
   21,150.95x = 31,723.67 × 10,064.69
4. Step 4: Simplify right side
   21,150.95x = 319,288,904.21
5. Step 5: Solve for x
   x = 319,288,904.21/21,150.95
6. Step 6: Final answer
   x = 15,095.72