Finding the Fourth Proportional to 9,703.50, 13,390.83 and 5,287.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,703.50 : 13,390.83 = 5,287.50 : x
2. Step 2: Convert to fraction form
   9,703.50/13,390.83 = 5,287.50/x
3. Step 3: Cross multiply
   9,703.50x = 13,390.83 × 5,287.50
4. Step 4: Simplify right side
   9,703.50x = 70,804,013.63
5. Step 5: Solve for x
   x = 70,804,013.63/9,703.50
6. Step 6: Final answer
   x = 7,296.75