Finding the Fourth Proportional to 3,115,404.60, 4,367,865 and 3,115,404.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,115,404.60 : 4,367,865 = 3,115,404.60 : x
2. Step 2: Convert to fraction form
   3,115,404.60/4,367,865 = 3,115,404.60/x
3. Step 3: Cross multiply
   3,115,404.60x = 4,367,865 × 3,115,404.60
4. Step 4: Simplify right side
   3,115,404.60x = 13,607,666,713,179
5. Step 5: Solve for x
   x = 13,607,666,713,179/3,115,404.60
6. Step 6: Final answer
   x = 4,367,865