Finding the Fourth Proportional to 12,671,145.30, 17,486,549.31 and 7,164,401.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,671,145.30 : 17,486,549.31 = 7,164,401.86 : x
2. Step 2: Convert to fraction form
   12,671,145.30/17,486,549.31 = 7,164,401.86/x
3. Step 3: Cross multiply
   12,671,145.30x = 17,486,549.31 × 7,164,401.86
4. Step 4: Simplify right side
   12,671,145.30x = 125,280,666,401,545.72
5. Step 5: Solve for x
   x = 125,280,666,401,545.72/12,671,145.30
6. Step 6: Final answer
   x = 9,887,083.09