Finding the Fourth Proportional to 23,230.72, 32,071.68 and 15,296

Step by Step Solution

1. Step 1: Write the proportion equation
   23,230.72 : 32,071.68 = 15,296 : x
2. Step 2: Convert to fraction form
   23,230.72/32,071.68 = 15,296/x
3. Step 3: Cross multiply
   23,230.72x = 32,071.68 × 15,296
4. Step 4: Simplify right side
   23,230.72x = 490,568,417.28
5. Step 5: Solve for x
   x = 490,568,417.28/23,230.72
6. Step 6: Final answer
   x = 21,117.23