Finding the Fourth Proportional to 12,417.05, 17,136.50 and 7,113.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,417.05 : 17,136.50 = 7,113.57 : x
2. Step 2: Convert to fraction form
   12,417.05/17,136.50 = 7,113.57/x
3. Step 3: Cross multiply
   12,417.05x = 17,136.50 × 7,113.57
4. Step 4: Simplify right side
   12,417.05x = 121,901,692.31
5. Step 5: Solve for x
   x = 121,901,692.31/12,417.05
6. Step 6: Final answer
   x = 9,817.28