Finding the Fourth Proportional to 9,557.34, 13,187.54 and 5,307.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,557.34 : 13,187.54 = 5,307.72 : x
2. Step 2: Convert to fraction form
   9,557.34/13,187.54 = 5,307.72/x
3. Step 3: Cross multiply
   9,557.34x = 13,187.54 × 5,307.72
4. Step 4: Simplify right side
   9,557.34x = 69,995,769.81
5. Step 5: Solve for x
   x = 69,995,769.81/9,557.34
6. Step 6: Final answer
   x = 7,323.77