Finding the Fourth Proportional to 13,715.73, 18,928.76 and 7,748.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,715.73 : 18,928.76 = 7,748.06 : x
2. Step 2: Convert to fraction form
   13,715.73/18,928.76 = 7,748.06/x
3. Step 3: Cross multiply
   13,715.73x = 18,928.76 × 7,748.06
4. Step 4: Simplify right side
   13,715.73x = 146,661,034.82
5. Step 5: Solve for x
   x = 146,661,034.82/13,715.73
6. Step 6: Final answer
   x = 10,692.91