Finding the Fourth Proportional to 9,123.40, 12,593.71 and 7,102.81

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.40 : 12,593.71 = 7,102.81 : x
2. Step 2: Convert to fraction form
   9,123.40/12,593.71 = 7,102.81/x
3. Step 3: Cross multiply
   9,123.40x = 12,593.71 × 7,102.81
4. Step 4: Simplify right side
   9,123.40x = 89,450,713.99
5. Step 5: Solve for x
   x = 89,450,713.99/9,123.40
6. Step 6: Final answer
   x = 9,804.54