Finding the Fourth Proportional to 17,139.55, 23,653.79 and 9,586.59

Step by Step Solution

1. Step 1: Write the proportion equation
   17,139.55 : 23,653.79 = 9,586.59 : x
2. Step 2: Convert to fraction form
   17,139.55/23,653.79 = 9,586.59/x
3. Step 3: Cross multiply
   17,139.55x = 23,653.79 × 9,586.59
4. Step 4: Simplify right side
   17,139.55x = 226,759,085.99
5. Step 5: Solve for x
   x = 226,759,085.99/17,139.55
6. Step 6: Final answer
   x = 13,230.17