Finding the Fourth Proportional to 10,645, 15,967.58 and 3,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,645 : 15,967.58 = 3,719.50 : x
2. Step 2: Convert to fraction form
   10,645/15,967.58 = 3,719.50/x
3. Step 3: Cross multiply
   10,645x = 15,967.58 × 3,719.50
4. Step 4: Simplify right side
   10,645x = 59,391,413.81
5. Step 5: Solve for x
   x = 59,391,413.81/10,645
6. Step 6: Final answer
   x = 5,579.28