Finding the Fourth Proportional to 13,715.75, 18,927.64 and 7,748.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,715.75 : 18,927.64 = 7,748.59 : x
2. Step 2: Convert to fraction form
   13,715.75/18,927.64 = 7,748.59/x
3. Step 3: Cross multiply
   13,715.75x = 18,927.64 × 7,748.59
4. Step 4: Simplify right side
   13,715.75x = 146,662,455.34
5. Step 5: Solve for x
   x = 146,662,455.34/13,715.75
6. Step 6: Final answer
   x = 10,692.99