Finding the Fourth Proportional to 7,172,126, 9,897,245.16 and 3,908,870.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,172,126 : 9,897,245.16 = 3,908,870.50 : x
2. Step 2: Convert to fraction form
   7,172,126/9,897,245.16 = 3,908,870.50/x
3. Step 3: Cross multiply
   7,172,126x = 9,897,245.16 × 3,908,870.50
4. Step 4: Simplify right side
   7,172,126x = 38,687,049,637,191.78
5. Step 5: Solve for x
   x = 38,687,049,637,191.78/7,172,126
6. Step 6: Final answer
   x = 5,394,083.94