Finding the Fourth Proportional to 12,055.76, 16,638.72 and 7,339.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,055.76 : 16,638.72 = 7,339.16 : x
2. Step 2: Convert to fraction form
   12,055.76/16,638.72 = 7,339.16/x
3. Step 3: Cross multiply
   12,055.76x = 16,638.72 × 7,339.16
4. Step 4: Simplify right side
   12,055.76x = 122,114,228.28
5. Step 5: Solve for x
   x = 122,114,228.28/12,055.76
6. Step 6: Final answer
   x = 10,129.12