Finding the Fourth Proportional to 12,379.07, 17,084.29 and 7,072.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,379.07 : 17,084.29 = 7,072.86 : x
2. Step 2: Convert to fraction form
   12,379.07/17,084.29 = 7,072.86/x
3. Step 3: Cross multiply
   12,379.07x = 17,084.29 × 7,072.86
4. Step 4: Simplify right side
   12,379.07x = 120,834,773.69
5. Step 5: Solve for x
   x = 120,834,773.69/12,379.07
6. Step 6: Final answer
   x = 9,761.21