Finding the Fourth Proportional to 13,146, 18,141.56 and 7,557.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,146 : 18,141.56 = 7,557.04 : x
2. Step 2: Convert to fraction form
   13,146/18,141.56 = 7,557.04/x
3. Step 3: Cross multiply
   13,146x = 18,141.56 × 7,557.04
4. Step 4: Simplify right side
   13,146x = 137,096,494.58
5. Step 5: Solve for x
   x = 137,096,494.58/13,146
6. Step 6: Final answer
   x = 10,428.76