Finding the Fourth Proportional to 16,851.30, 23,259.42 and 9,780

Step by Step Solution

1. Step 1: Write the proportion equation
   16,851.30 : 23,259.42 = 9,780 : x
2. Step 2: Convert to fraction form
   16,851.30/23,259.42 = 9,780/x
3. Step 3: Cross multiply
   16,851.30x = 23,259.42 × 9,780
4. Step 4: Simplify right side
   16,851.30x = 227,477,127.60
5. Step 5: Solve for x
   x = 227,477,127.60/16,851.30
6. Step 6: Final answer
   x = 13,499.08