Finding the Fourth Proportional to 12,786,010.31, 19,186,582.24 and 4,704,661.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,786,010.31 : 19,186,582.24 = 4,704,661.05 : x
2. Step 2: Convert to fraction form
   12,786,010.31/19,186,582.24 = 4,704,661.05/x
3. Step 3: Cross multiply
   12,786,010.31x = 19,186,582.24 × 4,704,661.05
4. Step 4: Simplify right side
   12,786,010.31x = 90,266,366,162,541.69
5. Step 5: Solve for x
   x = 90,266,366,162,541.69/12,786,010.31
6. Step 6: Final answer
   x = 7,059,775.80