Finding the Fourth Proportional to 11,938.32, 17,910.72 and 4,147.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,938.32 : 17,910.72 = 4,147.56 : x
2. Step 2: Convert to fraction form
   11,938.32/17,910.72 = 4,147.56/x
3. Step 3: Cross multiply
   11,938.32x = 17,910.72 × 4,147.56
4. Step 4: Simplify right side
   11,938.32x = 74,285,785.84
5. Step 5: Solve for x
   x = 74,285,785.84/11,938.32
6. Step 6: Final answer
   x = 6,222.47