Finding the Fourth Proportional to 12,784.89, 17,638.92 and 7,475.95

Step by Step Solution

1. Step 1: Write the proportion equation
   12,784.89 : 17,638.92 = 7,475.95 : x
2. Step 2: Convert to fraction form
   12,784.89/17,638.92 = 7,475.95/x
3. Step 3: Cross multiply
   12,784.89x = 17,638.92 × 7,475.95
4. Step 4: Simplify right side
   12,784.89x = 131,867,639.88
5. Step 5: Solve for x
   x = 131,867,639.88/12,784.89
6. Step 6: Final answer
   x = 10,314.34