Finding the Fourth Proportional to 12,684.31, 19,030.83 and 5,669.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,684.31 : 19,030.83 = 5,669.16 : x
2. Step 2: Convert to fraction form
   12,684.31/19,030.83 = 5,669.16/x
3. Step 3: Cross multiply
   12,684.31x = 19,030.83 × 5,669.16
4. Step 4: Simplify right side
   12,684.31x = 107,888,820.20
5. Step 5: Solve for x
   x = 107,888,820.20/12,684.31
6. Step 6: Final answer
   x = 8,505.69