Finding the Fourth Proportional to 12,905.39, 17,807.28 and 7,601.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,905.39 : 17,807.28 = 7,601.25 : x
2. Step 2: Convert to fraction form
   12,905.39/17,807.28 = 7,601.25/x
3. Step 3: Cross multiply
   12,905.39x = 17,807.28 × 7,601.25
4. Step 4: Simplify right side
   12,905.39x = 135,357,625.37
5. Step 5: Solve for x
   x = 135,357,625.37/12,905.39
6. Step 6: Final answer
   x = 10,488.45