Finding the Fourth Proportional to 12,788.76, 19,188.72 and 4,474.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,788.76 : 19,188.72 = 4,474.76 : x
2. Step 2: Convert to fraction form
   12,788.76/19,188.72 = 4,474.76/x
3. Step 3: Cross multiply
   12,788.76x = 19,188.72 × 4,474.76
4. Step 4: Simplify right side
   12,788.76x = 85,864,916.71
5. Step 5: Solve for x
   x = 85,864,916.71/12,788.76
6. Step 6: Final answer
   x = 6,714.09