Finding the Fourth Proportional to 12,912.58, 19,366.32 and 5,890.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,912.58 : 19,366.32 = 5,890.50 : x
2. Step 2: Convert to fraction form
   12,912.58/19,366.32 = 5,890.50/x
3. Step 3: Cross multiply
   12,912.58x = 19,366.32 × 5,890.50
4. Step 4: Simplify right side
   12,912.58x = 114,077,307.96
5. Step 5: Solve for x
   x = 114,077,307.96/12,912.58
6. Step 6: Final answer
   x = 8,834.59