Finding the Fourth Proportional to 12,942,100.70, 17,860,472.86 and 7,141,256.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,942,100.70 : 17,860,472.86 = 7,141,256.09 : x
2. Step 2: Convert to fraction form
   12,942,100.70/17,860,472.86 = 7,141,256.09/x
3. Step 3: Cross multiply
   12,942,100.70x = 17,860,472.86 × 7,141,256.09
4. Step 4: Simplify right side
   12,942,100.70x = 127,546,210,581,754.70
5. Step 5: Solve for x
   x = 127,546,210,581,754.70/12,942,100.70
6. Step 6: Final answer
   x = 9,855,139.71