Finding the Fourth Proportional to 3,501.80, 5,313.52 and 3,501.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,501.80 : 5,313.52 = 3,501.80 : x
2. Step 2: Convert to fraction form
   3,501.80/5,313.52 = 3,501.80/x
3. Step 3: Cross multiply
   3,501.80x = 5,313.52 × 3,501.80
4. Step 4: Simplify right side
   3,501.80x = 18,606,884.34
5. Step 5: Solve for x
   x = 18,606,884.34/3,501.80
6. Step 6: Final answer
   x = 5,313.52