Finding the Fourth Proportional to 13,128.49, 19,696.38 and 5,733.60

Step by Step Solution

1. Step 1: Write the proportion equation
   13,128.49 : 19,696.38 = 5,733.60 : x
2. Step 2: Convert to fraction form
   13,128.49/19,696.38 = 5,733.60/x
3. Step 3: Cross multiply
   13,128.49x = 19,696.38 × 5,733.60
4. Step 4: Simplify right side
   13,128.49x = 112,931,164.37
5. Step 5: Solve for x
   x = 112,931,164.37/13,128.49
6. Step 6: Final answer
   x = 8,601.99