Finding the Fourth Proportional to 7,322.42, 10,985.43 and 2,128.34

Step by Step Solution

1. Step 1: Write the proportion equation
   7,322.42 : 10,985.43 = 2,128.34 : x
2. Step 2: Convert to fraction form
   7,322.42/10,985.43 = 2,128.34/x
3. Step 3: Cross multiply
   7,322.42x = 10,985.43 × 2,128.34
4. Step 4: Simplify right side
   7,322.42x = 23,380,730.09
5. Step 5: Solve for x
   x = 23,380,730.09/7,322.42
6. Step 6: Final answer
   x = 3,193.03