Finding the Fourth Proportional to 12,820,496.81, 17,691,584.82 and 7,018,156.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,820,496.81 : 17,691,584.82 = 7,018,156.17 : x
2. Step 2: Convert to fraction form
   12,820,496.81/17,691,584.82 = 7,018,156.17/x
3. Step 3: Cross multiply
   12,820,496.81x = 17,691,584.82 × 7,018,156.17
4. Step 4: Simplify right side
   12,820,496.81x = 124,162,305,161,561.34
5. Step 5: Solve for x
   x = 124,162,305,161,561.34/12,820,496.81
6. Step 6: Final answer
   x = 9,684,671.90