Finding the Fourth Proportional to 12,919,087.38, 17,828,661.56 and 7,955,649.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,919,087.38 : 17,828,661.56 = 7,955,649.88 : x
2. Step 2: Convert to fraction form
   12,919,087.38/17,828,661.56 = 7,955,649.88/x
3. Step 3: Cross multiply
   12,919,087.38x = 17,828,661.56 × 7,955,649.88
4. Step 4: Simplify right side
   12,919,087.38x = 141,838,589,200,374.59
5. Step 5: Solve for x
   x = 141,838,589,200,374.59/12,919,087.38
6. Step 6: Final answer
   x = 10,978,994.49