Finding the Fourth Proportional to 7,003.50, 10,507.05 and 2,386.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,003.50 : 10,507.05 = 2,386.50 : x
2. Step 2: Convert to fraction form
   7,003.50/10,507.05 = 2,386.50/x
3. Step 3: Cross multiply
   7,003.50x = 10,507.05 × 2,386.50
4. Step 4: Simplify right side
   7,003.50x = 25,075,074.83
5. Step 5: Solve for x
   x = 25,075,074.83/7,003.50
6. Step 6: Final answer
   x = 3,580.36