Finding the Fourth Proportional to 7,038.78, 10,557.56 and 2,109.52

Step by Step Solution

1. Step 1: Write the proportion equation
   7,038.78 : 10,557.56 = 2,109.52 : x
2. Step 2: Convert to fraction form
   7,038.78/10,557.56 = 2,109.52/x
3. Step 3: Cross multiply
   7,038.78x = 10,557.56 × 2,109.52
4. Step 4: Simplify right side
   7,038.78x = 22,271,373.42
5. Step 5: Solve for x
   x = 22,271,373.42/7,038.78
6. Step 6: Final answer
   x = 3,164.10