Finding the Fourth Proportional to 12,406,862.10, 18,610,299.72 and 3,887,865.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,406,862.10 : 18,610,299.72 = 3,887,865.30 : x
2. Step 2: Convert to fraction form
   12,406,862.10/18,610,299.72 = 3,887,865.30/x
3. Step 3: Cross multiply
   12,406,862.10x = 18,610,299.72 × 3,887,865.30
4. Step 4: Simplify right side
   12,406,862.10x = 72,354,338,503,987.70
5. Step 5: Solve for x
   x = 72,354,338,503,987.70/12,406,862.10
6. Step 6: Final answer
   x = 5,831,800.01