Finding the Fourth Proportional to 12,432,945.60, 18,651,940.65 and 3,911,300.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,432,945.60 : 18,651,940.65 = 3,911,300.10 : x
2. Step 2: Convert to fraction form
   12,432,945.60/18,651,940.65 = 3,911,300.10/x
3. Step 3: Cross multiply
   12,432,945.60x = 18,651,940.65 × 3,911,300.10
4. Step 4: Simplify right side
   12,432,945.60x = 72,953,337,329,539.06
5. Step 5: Solve for x
   x = 72,953,337,329,539.06/12,432,945.60
6. Step 6: Final answer
   x = 5,867,743.63