Finding the Fourth Proportional to 13,085.50, 19,601.52 and 10,887.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,085.50 : 19,601.52 = 10,887.16 : x
2. Step 2: Convert to fraction form
   13,085.50/19,601.52 = 10,887.16/x
3. Step 3: Cross multiply
   13,085.50x = 19,601.52 × 10,887.16
4. Step 4: Simplify right side
   13,085.50x = 213,404,884.48
5. Step 5: Solve for x
   x = 213,404,884.48/13,085.50
6. Step 6: Final answer
   x = 16,308.50