Finding the Fourth Proportional to 10,145.61, 15,219.63 and 3,572.46

Step by Step Solution

1. Step 1: Write the proportion equation
   10,145.61 : 15,219.63 = 3,572.46 : x
2. Step 2: Convert to fraction form
   10,145.61/15,219.63 = 3,572.46/x
3. Step 3: Cross multiply
   10,145.61x = 15,219.63 × 3,572.46
4. Step 4: Simplify right side
   10,145.61x = 54,371,519.39
5. Step 5: Solve for x
   x = 54,371,519.39/10,145.61
6. Step 6: Final answer
   x = 5,359.12