Finding the Fourth Proportional to 9,012.04, 12,433.86 and 7,123.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,012.04 : 12,433.86 = 7,123.96 : x
2. Step 2: Convert to fraction form
   9,012.04/12,433.86 = 7,123.96/x
3. Step 3: Cross multiply
   9,012.04x = 12,433.86 × 7,123.96
4. Step 4: Simplify right side
   9,012.04x = 88,578,321.29
5. Step 5: Solve for x
   x = 88,578,321.29/9,012.04
6. Step 6: Final answer
   x = 9,828.89