Finding the Fourth Proportional to 7,865.50, 10,856.67 and 4,681.03

Step by Step Solution

1. Step 1: Write the proportion equation
   7,865.50 : 10,856.67 = 4,681.03 : x
2. Step 2: Convert to fraction form
   7,865.50/10,856.67 = 4,681.03/x
3. Step 3: Cross multiply
   7,865.50x = 10,856.67 × 4,681.03
4. Step 4: Simplify right side
   7,865.50x = 50,820,343.69
5. Step 5: Solve for x
   x = 50,820,343.69/7,865.50
6. Step 6: Final answer
   x = 6,461.18