Finding the Fourth Proportional to 12,077.80, 16,667.54 and 9,047.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,077.80 : 16,667.54 = 9,047.55 : x
2. Step 2: Convert to fraction form
   12,077.80/16,667.54 = 9,047.55/x
3. Step 3: Cross multiply
   12,077.80x = 16,667.54 × 9,047.55
4. Step 4: Simplify right side
   12,077.80x = 150,800,483.52
5. Step 5: Solve for x
   x = 150,800,483.52/12,077.80
6. Step 6: Final answer
   x = 12,485.76