Finding the Fourth Proportional to 21,160,942.70, 31,741,414.05 and 13,047,610.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,160,942.70 : 31,741,414.05 = 13,047,610.10 : x
2. Step 2: Convert to fraction form
   21,160,942.70/31,741,414.05 = 13,047,610.10/x
3. Step 3: Cross multiply
   21,160,942.70x = 31,741,414.05 × 13,047,610.10
4. Step 4: Simplify right side
   21,160,942.70x = 414,149,594,547,061.88
5. Step 5: Solve for x
   x = 414,149,594,547,061.88/21,160,942.70
6. Step 6: Final answer
   x = 19,571,415.15