Finding the Fourth Proportional to 9,372.51, 12,933.70 and 5,123.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,372.51 : 12,933.70 = 5,123.72 : x
2. Step 2: Convert to fraction form
   9,372.51/12,933.70 = 5,123.72/x
3. Step 3: Cross multiply
   9,372.51x = 12,933.70 × 5,123.72
4. Step 4: Simplify right side
   9,372.51x = 66,268,676.89
5. Step 5: Solve for x
   x = 66,268,676.89/9,372.51
6. Step 6: Final answer
   x = 7,070.54