Finding the Fourth Proportional to 9,372.16, 12,933.72 and 5,123.29

Step by Step Solution

1. Step 1: Write the proportion equation
   9,372.16 : 12,933.72 = 5,123.29 : x
2. Step 2: Convert to fraction form
   9,372.16/12,933.72 = 5,123.29/x
3. Step 3: Cross multiply
   9,372.16x = 12,933.72 × 5,123.29
4. Step 4: Simplify right side
   9,372.16x = 66,263,198.34
5. Step 5: Solve for x
   x = 66,263,198.34/9,372.16
6. Step 6: Final answer
   x = 7,070.22