Finding the Fourth Proportional to 7,111.67, 10,661.36 and 3,820.93

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.67 : 10,661.36 = 3,820.93 : x
2. Step 2: Convert to fraction form
   7,111.67/10,661.36 = 3,820.93/x
3. Step 3: Cross multiply
   7,111.67x = 10,661.36 × 3,820.93
4. Step 4: Simplify right side
   7,111.67x = 40,736,264.51
5. Step 5: Solve for x
   x = 40,736,264.51/7,111.67
6. Step 6: Final answer
   x = 5,728.09