Finding the Fourth Proportional to 12,787.61, 17,646.89 and 7,483.44

Step by Step Solution

1. Step 1: Write the proportion equation
   12,787.61 : 17,646.89 = 7,483.44 : x
2. Step 2: Convert to fraction form
   12,787.61/17,646.89 = 7,483.44/x
3. Step 3: Cross multiply
   12,787.61x = 17,646.89 × 7,483.44
4. Step 4: Simplify right side
   12,787.61x = 132,059,372.98
5. Step 5: Solve for x
   x = 132,059,372.98/12,787.61
6. Step 6: Final answer
   x = 10,327.14