Finding the Fourth Proportional to 9,487.80, 13,091.49 and 5,507.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,487.80 : 13,091.49 = 5,507.46 : x
2. Step 2: Convert to fraction form
   9,487.80/13,091.49 = 5,507.46/x
3. Step 3: Cross multiply
   9,487.80x = 13,091.49 × 5,507.46
4. Step 4: Simplify right side
   9,487.80x = 72,100,857.52
5. Step 5: Solve for x
   x = 72,100,857.52/9,487.80
6. Step 6: Final answer
   x = 7,599.32