Finding the Fourth Proportional to 9,089.34, 12,544.23 and 5,554.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,089.34 : 12,544.23 = 5,554.90 : x
2. Step 2: Convert to fraction form
   9,089.34/12,544.23 = 5,554.90/x
3. Step 3: Cross multiply
   9,089.34x = 12,544.23 × 5,554.90
4. Step 4: Simplify right side
   9,089.34x = 69,681,943.23
5. Step 5: Solve for x
   x = 69,681,943.23/9,089.34
6. Step 6: Final answer
   x = 7,666.34