Finding the Fourth Proportional to 7,111.94, 10,667.51 and 2,181.57

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.94 : 10,667.51 = 2,181.57 : x
2. Step 2: Convert to fraction form
   7,111.94/10,667.51 = 2,181.57/x
3. Step 3: Cross multiply
   7,111.94x = 10,667.51 × 2,181.57
4. Step 4: Simplify right side
   7,111.94x = 23,271,925.24
5. Step 5: Solve for x
   x = 23,271,925.24/7,111.94
6. Step 6: Final answer
   x = 3,272.23