Finding the Fourth Proportional to 11,678.72, 17,519.16 and 4,657.04

Step by Step Solution

1. Step 1: Write the proportion equation
   11,678.72 : 17,519.16 = 4,657.04 : x
2. Step 2: Convert to fraction form
   11,678.72/17,519.16 = 4,657.04/x
3. Step 3: Cross multiply
   11,678.72x = 17,519.16 × 4,657.04
4. Step 4: Simplify right side
   11,678.72x = 81,587,428.89
5. Step 5: Solve for x
   x = 81,587,428.89/11,678.72
6. Step 6: Final answer
   x = 6,985.99