Finding the Fourth Proportional to 8,150.61, 12,225.81 and 2,603.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,150.61 : 12,225.81 = 2,603.89 : x
2. Step 2: Convert to fraction form
   8,150.61/12,225.81 = 2,603.89/x
3. Step 3: Cross multiply
   8,150.61x = 12,225.81 × 2,603.89
4. Step 4: Simplify right side
   8,150.61x = 31,834,664.40
5. Step 5: Solve for x
   x = 31,834,664.40/8,150.61
6. Step 6: Final answer
   x = 3,905.80