Finding the Fourth Proportional to 12,983,196.47, 19,476,566.49 and 5,408,390.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,983,196.47 : 19,476,566.49 = 5,408,390.75 : x
2. Step 2: Convert to fraction form
   12,983,196.47/19,476,566.49 = 5,408,390.75/x
3. Step 3: Cross multiply
   12,983,196.47x = 19,476,566.49 × 5,408,390.75
4. Step 4: Simplify right side
   12,983,196.47x = 105,336,882,046,275.95
5. Step 5: Solve for x
   x = 105,336,882,046,275.95/12,983,196.47
6. Step 6: Final answer
   x = 8,113,324.19