Finding the Fourth Proportional to 12,238,499.40, 18,342,002.70 and 7,441,096.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,238,499.40 : 18,342,002.70 = 7,441,096.20 : x
2. Step 2: Convert to fraction form
   12,238,499.40/18,342,002.70 = 7,441,096.20/x
3. Step 3: Cross multiply
   12,238,499.40x = 18,342,002.70 × 7,441,096.20
4. Step 4: Simplify right side
   12,238,499.40x = 136,484,606,591,359.73
5. Step 5: Solve for x
   x = 136,484,606,591,359.73/12,238,499.40
6. Step 6: Final answer
   x = 11,152,070.37