Finding the Fourth Proportional to 12,801.12, 19,176.12 and 7,880.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,801.12 : 19,176.12 = 7,880.34 : x
2. Step 2: Convert to fraction form
   12,801.12/19,176.12 = 7,880.34/x
3. Step 3: Cross multiply
   12,801.12x = 19,176.12 × 7,880.34
4. Step 4: Simplify right side
   12,801.12x = 151,114,345.48
5. Step 5: Solve for x
   x = 151,114,345.48/12,801.12
6. Step 6: Final answer
   x = 11,804.78