Finding the Fourth Proportional to 12,010,978.30, 18,014,717.85 and 3,490,426.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,010,978.30 : 18,014,717.85 = 3,490,426.30 : x
2. Step 2: Convert to fraction form
   12,010,978.30/18,014,717.85 = 3,490,426.30/x
3. Step 3: Cross multiply
   12,010,978.30x = 18,014,717.85 × 3,490,426.30
4. Step 4: Simplify right side
   12,010,978.30x = 62,879,044,970,719.45
5. Step 5: Solve for x
   x = 62,879,044,970,719.45/12,010,978.30
6. Step 6: Final answer
   x = 5,235,131.01