Finding the Fourth Proportional to 8,499.72, 12,748.76 and 2,259.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,499.72 : 12,748.76 = 2,259.88 : x
2. Step 2: Convert to fraction form
   8,499.72/12,748.76 = 2,259.88/x
3. Step 3: Cross multiply
   8,499.72x = 12,748.76 × 2,259.88
4. Step 4: Simplify right side
   8,499.72x = 28,810,667.75
5. Step 5: Solve for x
   x = 28,810,667.75/8,499.72
6. Step 6: Final answer
   x = 3,389.60