Finding the Fourth Proportional to 13,947.17, 19,247.42 and 7,659.68

Step by Step Solution

1. Step 1: Write the proportion equation
   13,947.17 : 19,247.42 = 7,659.68 : x
2. Step 2: Convert to fraction form
   13,947.17/19,247.42 = 7,659.68/x
3. Step 3: Cross multiply
   13,947.17x = 19,247.42 × 7,659.68
4. Step 4: Simplify right side
   13,947.17x = 147,429,000.94
5. Step 5: Solve for x
   x = 147,429,000.94/13,947.17
6. Step 6: Final answer
   x = 10,570.54