Finding the Fourth Proportional to 12,658.50, 17,468.55 and 7,356.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,658.50 : 17,468.55 = 7,356.30 : x
2. Step 2: Convert to fraction form
   12,658.50/17,468.55 = 7,356.30/x
3. Step 3: Cross multiply
   12,658.50x = 17,468.55 × 7,356.30
4. Step 4: Simplify right side
   12,658.50x = 128,503,894.37
5. Step 5: Solve for x
   x = 128,503,894.37/12,658.50
6. Step 6: Final answer
   x = 10,151.59