Finding the Fourth Proportional to 23,215.47, 32,039.34 and 13,145.69

Step by Step Solution

1. Step 1: Write the proportion equation
   23,215.47 : 32,039.34 = 13,145.69 : x
2. Step 2: Convert to fraction form
   23,215.47/32,039.34 = 13,145.69/x
3. Step 3: Cross multiply
   23,215.47x = 32,039.34 × 13,145.69
4. Step 4: Simplify right side
   23,215.47x = 421,179,071.25
5. Step 5: Solve for x
   x = 421,179,071.25/23,215.47
6. Step 6: Final answer
   x = 18,142.17