Finding the Fourth Proportional to 10,603.37, 15,905.88 and 2,812.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,603.37 : 15,905.88 = 2,812.18 : x
2. Step 2: Convert to fraction form
   10,603.37/15,905.88 = 2,812.18/x
3. Step 3: Cross multiply
   10,603.37x = 15,905.88 × 2,812.18
4. Step 4: Simplify right side
   10,603.37x = 44,730,200.86
5. Step 5: Solve for x
   x = 44,730,200.86/10,603.37
6. Step 6: Final answer
   x = 4,218.49