Finding the Fourth Proportional to 13,086.72, 19,631.16 and 5,294.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,086.72 : 19,631.16 = 5,294.52 : x
2. Step 2: Convert to fraction form
   13,086.72/19,631.16 = 5,294.52/x
3. Step 3: Cross multiply
   13,086.72x = 19,631.16 × 5,294.52
4. Step 4: Simplify right side
   13,086.72x = 103,937,569.24
5. Step 5: Solve for x
   x = 103,937,569.24/13,086.72
6. Step 6: Final answer
   x = 7,942.22