Finding the Fourth Proportional to 17,064.66, 23,549.39 and 9,991.23

Step by Step Solution

1. Step 1: Write the proportion equation
   17,064.66 : 23,549.39 = 9,991.23 : x
2. Step 2: Convert to fraction form
   17,064.66/23,549.39 = 9,991.23/x
3. Step 3: Cross multiply
   17,064.66x = 23,549.39 × 9,991.23
4. Step 4: Simplify right side
   17,064.66x = 235,287,321.89
5. Step 5: Solve for x
   x = 235,287,321.89/17,064.66
6. Step 6: Final answer
   x = 13,787.99