Finding the Fourth Proportional to 9,522.78, 13,140.99 and 5,543.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,522.78 : 13,140.99 = 5,543.34 : x
2. Step 2: Convert to fraction form
   9,522.78/13,140.99 = 5,543.34/x
3. Step 3: Cross multiply
   9,522.78x = 13,140.99 × 5,543.34
4. Step 4: Simplify right side
   9,522.78x = 72,844,975.51
5. Step 5: Solve for x
   x = 72,844,975.51/9,522.78
6. Step 6: Final answer
   x = 7,649.55