Finding the Fourth Proportional to 7,111.86, 10,670.86 and 3,821.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.86 : 10,670.86 = 3,821.10 : x
2. Step 2: Convert to fraction form
   7,111.86/10,670.86 = 3,821.10/x
3. Step 3: Cross multiply
   7,111.86x = 10,670.86 × 3,821.10
4. Step 4: Simplify right side
   7,111.86x = 40,774,423.15
5. Step 5: Solve for x
   x = 40,774,423.15/7,111.86
6. Step 6: Final answer
   x = 5,733.30