Finding the Fourth Proportional to 3,688.47, 5,521.77 and 2,901.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,688.47 : 5,521.77 = 2,901.15 : x
2. Step 2: Convert to fraction form
   3,688.47/5,521.77 = 2,901.15/x
3. Step 3: Cross multiply
   3,688.47x = 5,521.77 × 2,901.15
4. Step 4: Simplify right side
   3,688.47x = 16,019,483.04
5. Step 5: Solve for x
   x = 16,019,483.04/3,688.47
6. Step 6: Final answer
   x = 4,343.12