Finding the Fourth Proportional to 11,680.39, 17,522.89 and 4,284.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,680.39 : 17,522.89 = 4,284.91 : x
2. Step 2: Convert to fraction form
   11,680.39/17,522.89 = 4,284.91/x
3. Step 3: Cross multiply
   11,680.39x = 17,522.89 × 4,284.91
4. Step 4: Simplify right side
   11,680.39x = 75,084,001.23
5. Step 5: Solve for x
   x = 75,084,001.23/11,680.39
6. Step 6: Final answer
   x = 6,428.21