Finding the Fourth Proportional to 7,111.06, 10,666.50 and 3,212.74

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.06 : 10,666.50 = 3,212.74 : x
2. Step 2: Convert to fraction form
   7,111.06/10,666.50 = 3,212.74/x
3. Step 3: Cross multiply
   7,111.06x = 10,666.50 × 3,212.74
4. Step 4: Simplify right side
   7,111.06x = 34,268,691.21
5. Step 5: Solve for x
   x = 34,268,691.21/7,111.06
6. Step 6: Final answer
   x = 4,819.07