Finding the Fourth Proportional to 9,928.63, 13,706.18 and 5,736.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,928.63 : 13,706.18 = 5,736.07 : x
2. Step 2: Convert to fraction form
   9,928.63/13,706.18 = 5,736.07/x
3. Step 3: Cross multiply
   9,928.63x = 13,706.18 × 5,736.07
4. Step 4: Simplify right side
   9,928.63x = 78,619,607.91
5. Step 5: Solve for x
   x = 78,619,607.91/9,928.63
6. Step 6: Final answer
   x = 7,918.47