Finding the Fourth Proportional to 17,453.59, 26,196.79 and 9,139.58

Step by Step Solution

1. Step 1: Write the proportion equation
   17,453.59 : 26,196.79 = 9,139.58 : x
2. Step 2: Convert to fraction form
   17,453.59/26,196.79 = 9,139.58/x
3. Step 3: Cross multiply
   17,453.59x = 26,196.79 × 9,139.58
4. Step 4: Simplify right side
   17,453.59x = 239,427,592.56
5. Step 5: Solve for x
   x = 239,427,592.56/17,453.59
6. Step 6: Final answer
   x = 13,717.95