Finding the Fourth Proportional to 12,921.72, 19,392.24 and 5,025.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,921.72 : 19,392.24 = 5,025.48 : x
2. Step 2: Convert to fraction form
   12,921.72/19,392.24 = 5,025.48/x
3. Step 3: Cross multiply
   12,921.72x = 19,392.24 × 5,025.48
4. Step 4: Simplify right side
   12,921.72x = 97,455,314.28
5. Step 5: Solve for x
   x = 97,455,314.28/12,921.72
6. Step 6: Final answer
   x = 7,541.98