Finding the Fourth Proportional to 12,889.53, 19,333.89 and 3,655.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,889.53 : 19,333.89 = 3,655.53 : x
2. Step 2: Convert to fraction form
   12,889.53/19,333.89 = 3,655.53/x
3. Step 3: Cross multiply
   12,889.53x = 19,333.89 × 3,655.53
4. Step 4: Simplify right side
   12,889.53x = 70,675,614.91
5. Step 5: Solve for x
   x = 70,675,614.91/12,889.53
6. Step 6: Final answer
   x = 5,483.18