Finding the Fourth Proportional to 9,331.56, 12,876.71 and 5,554.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,331.56 : 12,876.71 = 5,554.12 : x
2. Step 2: Convert to fraction form
   9,331.56/12,876.71 = 5,554.12/x
3. Step 3: Cross multiply
   9,331.56x = 12,876.71 × 5,554.12
4. Step 4: Simplify right side
   9,331.56x = 71,518,764.77
5. Step 5: Solve for x
   x = 71,518,764.77/9,331.56
6. Step 6: Final answer
   x = 7,664.18