Finding the Fourth Proportional to 15,920.48, 21,970.72 and 10,467.52

Step by Step Solution

1. Step 1: Write the proportion equation
   15,920.48 : 21,970.72 = 10,467.52 : x
2. Step 2: Convert to fraction form
   15,920.48/21,970.72 = 10,467.52/x
3. Step 3: Cross multiply
   15,920.48x = 21,970.72 × 10,467.52
4. Step 4: Simplify right side
   15,920.48x = 229,978,951.01
5. Step 5: Solve for x
   x = 229,978,951.01/15,920.48
6. Step 6: Final answer
   x = 14,445.48