Finding the Fourth Proportional to 16,921.31, 25,380.72 and 7,562.16

Step by Step Solution

1. Step 1: Write the proportion equation
   16,921.31 : 25,380.72 = 7,562.16 : x
2. Step 2: Convert to fraction form
   16,921.31/25,380.72 = 7,562.16/x
3. Step 3: Cross multiply
   16,921.31x = 25,380.72 × 7,562.16
4. Step 4: Simplify right side
   16,921.31x = 191,933,065.56
5. Step 5: Solve for x
   x = 191,933,065.56/16,921.31
6. Step 6: Final answer
   x = 11,342.69