Finding the Fourth Proportional to 13,789.56, 19,030.46 and 9,322.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,789.56 : 19,030.46 = 9,322.12 : x
2. Step 2: Convert to fraction form
   13,789.56/19,030.46 = 9,322.12/x
3. Step 3: Cross multiply
   13,789.56x = 19,030.46 × 9,322.12
4. Step 4: Simplify right side
   13,789.56x = 177,404,231.78
5. Step 5: Solve for x
   x = 177,404,231.78/13,789.56
6. Step 6: Final answer
   x = 12,865.11