Finding the Fourth Proportional to 10,387.86, 15,583.86 and 3,814.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,387.86 : 15,583.86 = 3,814.12 : x
2. Step 2: Convert to fraction form
   10,387.86/15,583.86 = 3,814.12/x
3. Step 3: Cross multiply
   10,387.86x = 15,583.86 × 3,814.12
4. Step 4: Simplify right side
   10,387.86x = 59,438,712.10
5. Step 5: Solve for x
   x = 59,438,712.10/10,387.86
6. Step 6: Final answer
   x = 5,721.94