Finding the Fourth Proportional to 12,081,404.54, 18,113,055.15 and 7,287,976.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,081,404.54 : 18,113,055.15 = 7,287,976.46 : x
2. Step 2: Convert to fraction form
   12,081,404.54/18,113,055.15 = 7,287,976.46/x
3. Step 3: Cross multiply
   12,081,404.54x = 18,113,055.15 × 7,287,976.46
4. Step 4: Simplify right side
   12,081,404.54x = 132,007,519,551,881.75
5. Step 5: Solve for x
   x = 132,007,519,551,881.75/12,081,404.54
6. Step 6: Final answer
   x = 10,926,504.37