Finding the Fourth Proportional to 9,547.56, 13,174.92 and 5,355

Step by Step Solution

1. Step 1: Write the proportion equation
   9,547.56 : 13,174.92 = 5,355 : x
2. Step 2: Convert to fraction form
   9,547.56/13,174.92 = 5,355/x
3. Step 3: Cross multiply
   9,547.56x = 13,174.92 × 5,355
4. Step 4: Simplify right side
   9,547.56x = 70,551,696.60
5. Step 5: Solve for x
   x = 70,551,696.60/9,547.56
6. Step 6: Final answer
   x = 7,389.50