Finding the Fourth Proportional to 12,889.33, 19,334.18 and 3,655.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,889.33 : 19,334.18 = 3,655.33 : x
2. Step 2: Convert to fraction form
   12,889.33/19,334.18 = 3,655.33/x
3. Step 3: Cross multiply
   12,889.33x = 19,334.18 × 3,655.33
4. Step 4: Simplify right side
   12,889.33x = 70,672,789.90
5. Step 5: Solve for x
   x = 70,672,789.90/12,889.33
6. Step 6: Final answer
   x = 5,483.05