Finding the Fourth Proportional to 9,357.87, 12,916.55 and 5,533.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,357.87 : 12,916.55 = 5,533.05 : x
2. Step 2: Convert to fraction form
   9,357.87/12,916.55 = 5,533.05/x
3. Step 3: Cross multiply
   9,357.87x = 12,916.55 × 5,533.05
4. Step 4: Simplify right side
   9,357.87x = 71,467,916.98
5. Step 5: Solve for x
   x = 71,467,916.98/9,357.87
6. Step 6: Final answer
   x = 7,637.20