Finding the Fourth Proportional to 13,156,914.56, 18,155,620.37 and 7,649,898.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,156,914.56 : 18,155,620.37 = 7,649,898.72 : x
2. Step 2: Convert to fraction form
   13,156,914.56/18,155,620.37 = 7,649,898.72/x
3. Step 3: Cross multiply
   13,156,914.56x = 18,155,620.37 × 7,649,898.72
4. Step 4: Simplify right side
   13,156,914.56x = 138,888,657,029,268.92
5. Step 5: Solve for x
   x = 138,888,657,029,268.92/13,156,914.56
6. Step 6: Final answer
   x = 10,556,324.31