Finding the Fourth Proportional to 17,109.63, 23,609.90 and 9,555.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,109.63 : 23,609.90 = 9,555.50 : x
2. Step 2: Convert to fraction form
   17,109.63/23,609.90 = 9,555.50/x
3. Step 3: Cross multiply
   17,109.63x = 23,609.90 × 9,555.50
4. Step 4: Simplify right side
   17,109.63x = 225,604,482.36
5. Step 5: Solve for x
   x = 225,604,482.36/17,109.63
6. Step 6: Final answer
   x = 13,185.82