Finding the Fourth Proportional to 12,731,133.76, 19,096,513.38 and 3,146,513.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,731,133.76 : 19,096,513.38 = 3,146,513.20 : x
2. Step 2: Convert to fraction form
   12,731,133.76/19,096,513.38 = 3,146,513.20/x
3. Step 3: Cross multiply
   12,731,133.76x = 19,096,513.38 × 3,146,513.20
4. Step 4: Simplify right side
   12,731,133.76x = 60,087,431,424,146.62
5. Step 5: Solve for x
   x = 60,087,431,424,146.62/12,731,133.76
6. Step 6: Final answer
   x = 4,719,723.52