Finding the Fourth Proportional to 12,406,967.85, 18,610,458.53 and 3,887,971.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,406,967.85 : 18,610,458.53 = 3,887,971.05 : x
2. Step 2: Convert to fraction form
   12,406,967.85/18,610,458.53 = 3,887,971.05/x
3. Step 3: Cross multiply
   12,406,967.85x = 18,610,458.53 × 3,887,971.05
4. Step 4: Simplify right side
   12,406,967.85x = 72,356,923,972,425.69
5. Step 5: Solve for x
   x = 72,356,923,972,425.69/12,406,967.85
6. Step 6: Final answer
   x = 5,831,958.69