Finding the Fourth Proportional to 23,425.76, 32,340.91 and 15,491

Step by Step Solution

1. Step 1: Write the proportion equation
   23,425.76 : 32,340.91 = 15,491 : x
2. Step 2: Convert to fraction form
   23,425.76/32,340.91 = 15,491/x
3. Step 3: Cross multiply
   23,425.76x = 32,340.91 × 15,491
4. Step 4: Simplify right side
   23,425.76x = 500,993,036.81
5. Step 5: Solve for x
   x = 500,993,036.81/23,425.76
6. Step 6: Final answer
   x = 21,386.42