Finding the Fourth Proportional to 12,557.32, 18,825.18 and 4,771.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,557.32 : 18,825.18 = 4,771.72 : x
2. Step 2: Convert to fraction form
   12,557.32/18,825.18 = 4,771.72/x
3. Step 3: Cross multiply
   12,557.32x = 18,825.18 × 4,771.72
4. Step 4: Simplify right side
   12,557.32x = 89,828,487.91
5. Step 5: Solve for x
   x = 89,828,487.91/12,557.32
6. Step 6: Final answer
   x = 7,153.48