Finding the Fourth Proportional to 8,910.42, 12,296.53 and 4,877.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,910.42 : 12,296.53 = 4,877.60 : x
2. Step 2: Convert to fraction form
   8,910.42/12,296.53 = 4,877.60/x
3. Step 3: Cross multiply
   8,910.42x = 12,296.53 × 4,877.60
4. Step 4: Simplify right side
   8,910.42x = 59,977,554.73
5. Step 5: Solve for x
   x = 59,977,554.73/8,910.42
6. Step 6: Final answer
   x = 6,731.17