Finding the Fourth Proportional to 12,928.18, 19,376.59 and 5,898.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,928.18 : 19,376.59 = 5,898.56 : x
2. Step 2: Convert to fraction form
   12,928.18/19,376.59 = 5,898.56/x
3. Step 3: Cross multiply
   12,928.18x = 19,376.59 × 5,898.56
4. Step 4: Simplify right side
   12,928.18x = 114,293,915.52
5. Step 5: Solve for x
   x = 114,293,915.52/12,928.18
6. Step 6: Final answer
   x = 8,840.68