Finding the Fourth Proportional to 12,409,978.64, 18,614,973.42 and 3,890,979.41

Step by Step Solution

1. Step 1: Write the proportion equation
   12,409,978.64 : 18,614,973.42 = 3,890,979.41 : x
2. Step 2: Convert to fraction form
   12,409,978.64/18,614,973.42 = 3,890,979.41/x
3. Step 3: Cross multiply
   12,409,978.64x = 18,614,973.42 × 3,890,979.41
4. Step 4: Simplify right side
   12,409,978.64x = 72,430,478,201,842.42
5. Step 5: Solve for x
   x = 72,430,478,201,842.42/12,409,978.64
6. Step 6: Final answer
   x = 5,836,470.82