Finding the Fourth Proportional to 3,603.72, 5,402.89 and 2,430.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,603.72 : 5,402.89 = 2,430.43 : x
2. Step 2: Convert to fraction form
   3,603.72/5,402.89 = 2,430.43/x
3. Step 3: Cross multiply
   3,603.72x = 5,402.89 × 2,430.43
4. Step 4: Simplify right side
   3,603.72x = 13,131,322.47
5. Step 5: Solve for x
   x = 13,131,322.47/3,603.72
6. Step 6: Final answer
   x = 3,643.83