Finding the Fourth Proportional to 9,703.53, 14,556.78 and 3,128.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,703.53 : 14,556.78 = 3,128.22 : x
2. Step 2: Convert to fraction form
   9,703.53/14,556.78 = 3,128.22/x
3. Step 3: Cross multiply
   9,703.53x = 14,556.78 × 3,128.22
4. Step 4: Simplify right side
   9,703.53x = 45,536,810.33
5. Step 5: Solve for x
   x = 45,536,810.33/9,703.53
6. Step 6: Final answer
   x = 4,692.81