Finding the Fourth Proportional to 16,905.51, 25,365.56 and 9,112.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,905.51 : 25,365.56 = 9,112.50 : x
2. Step 2: Convert to fraction form
   16,905.51/25,365.56 = 9,112.50/x
3. Step 3: Cross multiply
   16,905.51x = 25,365.56 × 9,112.50
4. Step 4: Simplify right side
   16,905.51x = 231,143,619.94
5. Step 5: Solve for x
   x = 231,143,619.94/16,905.51
6. Step 6: Final answer
   x = 13,672.68