Finding the Fourth Proportional to 12,887.50, 19,334.49 and 3,653.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,887.50 : 19,334.49 = 3,653.50 : x
2. Step 2: Convert to fraction form
   12,887.50/19,334.49 = 3,653.50/x
3. Step 3: Cross multiply
   12,887.50x = 19,334.49 × 3,653.50
4. Step 4: Simplify right side
   12,887.50x = 70,638,559.22
5. Step 5: Solve for x
   x = 70,638,559.22/12,887.50
6. Step 6: Final answer
   x = 5,481.17