Finding the Fourth Proportional to 16,720.83, 23,075.28 and 9,647.10

Step by Step Solution

1. Step 1: Write the proportion equation
   16,720.83 : 23,075.28 = 9,647.10 : x
2. Step 2: Convert to fraction form
   16,720.83/23,075.28 = 9,647.10/x
3. Step 3: Cross multiply
   16,720.83x = 23,075.28 × 9,647.10
4. Step 4: Simplify right side
   16,720.83x = 222,609,533.69
5. Step 5: Solve for x
   x = 222,609,533.69/16,720.83
6. Step 6: Final answer
   x = 13,313.31