Finding the Fourth Proportional to 12,774.59, 19,281.88 and 12,774.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,774.59 : 19,281.88 = 12,774.59 : x
2. Step 2: Convert to fraction form
   12,774.59/19,281.88 = 12,774.59/x
3. Step 3: Cross multiply
   12,774.59x = 19,281.88 × 12,774.59
4. Step 4: Simplify right side
   12,774.59x = 246,317,951.15
5. Step 5: Solve for x
   x = 246,317,951.15/12,774.59
6. Step 6: Final answer
   x = 19,281.88