Finding the Fourth Proportional to 12,618.42, 17,420.41 and 7,583.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,618.42 : 17,420.41 = 7,583.86 : x
2. Step 2: Convert to fraction form
   12,618.42/17,420.41 = 7,583.86/x
3. Step 3: Cross multiply
   12,618.42x = 17,420.41 × 7,583.86
4. Step 4: Simplify right side
   12,618.42x = 132,113,950.58
5. Step 5: Solve for x
   x = 132,113,950.58/12,618.42
6. Step 6: Final answer
   x = 10,469.93