Finding the Fourth Proportional to 8,041.72, 12,072.30 and 4,775.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,041.72 : 12,072.30 = 4,775.80 : x
2. Step 2: Convert to fraction form
   8,041.72/12,072.30 = 4,775.80/x
3. Step 3: Cross multiply
   8,041.72x = 12,072.30 × 4,775.80
4. Step 4: Simplify right side
   8,041.72x = 57,654,890.34
5. Step 5: Solve for x
   x = 57,654,890.34/8,041.72
6. Step 6: Final answer
   x = 7,169.47