Finding the Fourth Proportional to 12,611.76, 18,916.47 and 5,946.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,611.76 : 18,916.47 = 5,946.72 : x
2. Step 2: Convert to fraction form
   12,611.76/18,916.47 = 5,946.72/x
3. Step 3: Cross multiply
   12,611.76x = 18,916.47 × 5,946.72
4. Step 4: Simplify right side
   12,611.76x = 112,490,950.48
5. Step 5: Solve for x
   x = 112,490,950.48/12,611.76
6. Step 6: Final answer
   x = 8,919.53