Finding the Fourth Proportional to 21,471.52, 32,210.72 and 10,379.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,471.52 : 32,210.72 = 10,379.02 : x
2. Step 2: Convert to fraction form
   21,471.52/32,210.72 = 10,379.02/x
3. Step 3: Cross multiply
   21,471.52x = 32,210.72 × 10,379.02
4. Step 4: Simplify right side
   21,471.52x = 334,315,707.09
5. Step 5: Solve for x
   x = 334,315,707.09/21,471.52
6. Step 6: Final answer
   x = 15,570.19