Finding the Fourth Proportional to 12,915.84, 19,385.28 and 5,994.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,915.84 : 19,385.28 = 5,994.24 : x
2. Step 2: Convert to fraction form
   12,915.84/19,385.28 = 5,994.24/x
3. Step 3: Cross multiply
   12,915.84x = 19,385.28 × 5,994.24
4. Step 4: Simplify right side
   12,915.84x = 116,200,020.79
5. Step 5: Solve for x
   x = 116,200,020.79/12,915.84
6. Step 6: Final answer
   x = 8,996.71