Finding the Fourth Proportional to 3,710.09, 5,538.69 and 3,580.36

Step by Step Solution

1. Step 1: Write the proportion equation
   3,710.09 : 5,538.69 = 3,580.36 : x
2. Step 2: Convert to fraction form
   3,710.09/5,538.69 = 3,580.36/x
3. Step 3: Cross multiply
   3,710.09x = 5,538.69 × 3,580.36
4. Step 4: Simplify right side
   3,710.09x = 19,830,490.28
5. Step 5: Solve for x
   x = 19,830,490.28/3,710.09
6. Step 6: Final answer
   x = 5,345.01