Finding the Fourth Proportional to 12,997,604.96, 17,937,255.39 and 7,196,386.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,997,604.96 : 17,937,255.39 = 7,196,386.78 : x
2. Step 2: Convert to fraction form
   12,997,604.96/17,937,255.39 = 7,196,386.78/x
3. Step 3: Cross multiply
   12,997,604.96x = 17,937,255.39 × 7,196,386.78
4. Step 4: Simplify right side
   12,997,604.96x = 129,083,427,522,097.83
5. Step 5: Solve for x
   x = 129,083,427,522,097.83/12,997,604.96
6. Step 6: Final answer
   x = 9,931,324.11