Finding the Fourth Proportional to 8,468.31, 11,686.68 and 5,111.07

Step by Step Solution

1. Step 1: Write the proportion equation
   8,468.31 : 11,686.68 = 5,111.07 : x
2. Step 2: Convert to fraction form
   8,468.31/11,686.68 = 5,111.07/x
3. Step 3: Cross multiply
   8,468.31x = 11,686.68 × 5,111.07
4. Step 4: Simplify right side
   8,468.31x = 59,731,439.55
5. Step 5: Solve for x
   x = 59,731,439.55/8,468.31
6. Step 6: Final answer
   x = 7,053.53