Finding the Fourth Proportional to 12,434,618.32, 18,651,960.76 and 3,459,171.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,434,618.32 : 18,651,960.76 = 3,459,171.28 : x
2. Step 2: Convert to fraction form
   12,434,618.32/18,651,960.76 = 3,459,171.28/x
3. Step 3: Cross multiply
   12,434,618.32x = 18,651,960.76 × 3,459,171.28
4. Step 4: Simplify right side
   12,434,618.32x = 64,520,326,976,678.98
5. Step 5: Solve for x
   x = 64,520,326,976,678.98/12,434,618.32
6. Step 6: Final answer
   x = 5,188,766.18