Finding the Fourth Proportional to 13,897.31, 19,178.39 and 7,609.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,897.31 : 19,178.39 = 7,609.69 : x
2. Step 2: Convert to fraction form
   13,897.31/19,178.39 = 7,609.69/x
3. Step 3: Cross multiply
   13,897.31x = 19,178.39 × 7,609.69
4. Step 4: Simplify right side
   13,897.31x = 145,941,573.68
5. Step 5: Solve for x
   x = 145,941,573.68/13,897.31
6. Step 6: Final answer
   x = 10,501.42