Finding the Fourth Proportional to 12,385.10, 17,091.56 and 6,719.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,385.10 : 17,091.56 = 6,719.86 : x
2. Step 2: Convert to fraction form
   12,385.10/17,091.56 = 6,719.86/x
3. Step 3: Cross multiply
   12,385.10x = 17,091.56 × 6,719.86
4. Step 4: Simplify right side
   12,385.10x = 114,852,890.75
5. Step 5: Solve for x
   x = 114,852,890.75/12,385.10
6. Step 6: Final answer
   x = 9,273.47