Finding the Fourth Proportional to 9,820.61, 14,745.69 and 8,448.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,820.61 : 14,745.69 = 8,448.87 : x
2. Step 2: Convert to fraction form
   9,820.61/14,745.69 = 8,448.87/x
3. Step 3: Cross multiply
   9,820.61x = 14,745.69 × 8,448.87
4. Step 4: Simplify right side
   9,820.61x = 124,584,417.87
5. Step 5: Solve for x
   x = 124,584,417.87/9,820.61
6. Step 6: Final answer
   x = 12,686.02