Finding the Fourth Proportional to 12,603.87, 17,394.35 and 7,298.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,603.87 : 17,394.35 = 7,298.78 : x
2. Step 2: Convert to fraction form
   12,603.87/17,394.35 = 7,298.78/x
3. Step 3: Cross multiply
   12,603.87x = 17,394.35 × 7,298.78
4. Step 4: Simplify right side
   12,603.87x = 126,957,533.89
5. Step 5: Solve for x
   x = 126,957,533.89/12,603.87
6. Step 6: Final answer
   x = 10,072.90