Finding the Fourth Proportional to 9,102.33, 12,561.12 and 5,123.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,102.33 : 12,561.12 = 5,123.43 : x
2. Step 2: Convert to fraction form
   9,102.33/12,561.12 = 5,123.43/x
3. Step 3: Cross multiply
   9,102.33x = 12,561.12 × 5,123.43
4. Step 4: Simplify right side
   9,102.33x = 64,356,019.04
5. Step 5: Solve for x
   x = 64,356,019.04/9,102.33
6. Step 6: Final answer
   x = 7,070.28