Finding the Fourth Proportional to 23,985.18, 35,946.18 and 13,455

Step by Step Solution

1. Step 1: Write the proportion equation
   23,985.18 : 35,946.18 = 13,455 : x
2. Step 2: Convert to fraction form
   23,985.18/35,946.18 = 13,455/x
3. Step 3: Cross multiply
   23,985.18x = 35,946.18 × 13,455
4. Step 4: Simplify right side
   23,985.18x = 483,655,851.90
5. Step 5: Solve for x
   x = 483,655,851.90/23,985.18
6. Step 6: Final answer
   x = 20,164.78