Finding the Fourth Proportional to 7,111.62, 10,664.59 and 2,948.81

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.62 : 10,664.59 = 2,948.81 : x
2. Step 2: Convert to fraction form
   7,111.62/10,664.59 = 2,948.81/x
3. Step 3: Cross multiply
   7,111.62x = 10,664.59 × 2,948.81
4. Step 4: Simplify right side
   7,111.62x = 31,447,786.18
5. Step 5: Solve for x
   x = 31,447,786.18/7,111.62
6. Step 6: Final answer
   x = 4,422.03