Finding the Fourth Proportional to 10,155.69, 15,234.80 and 3,580.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,155.69 : 15,234.80 = 3,580.56 : x
2. Step 2: Convert to fraction form
   10,155.69/15,234.80 = 3,580.56/x
3. Step 3: Cross multiply
   10,155.69x = 15,234.80 × 3,580.56
4. Step 4: Simplify right side
   10,155.69x = 54,549,097.59
5. Step 5: Solve for x
   x = 54,549,097.59/10,155.69
6. Step 6: Final answer
   x = 5,371.28