Finding the Fourth Proportional to 9,910.72, 14,865.32 and 3,667.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,910.72 : 14,865.32 = 3,667.80 : x
2. Step 2: Convert to fraction form
   9,910.72/14,865.32 = 3,667.80/x
3. Step 3: Cross multiply
   9,910.72x = 14,865.32 × 3,667.80
4. Step 4: Simplify right side
   9,910.72x = 54,523,001.99
5. Step 5: Solve for x
   x = 54,523,001.99/9,910.72
6. Step 6: Final answer
   x = 5,501.42