Finding the Fourth Proportional to 12,979,967.33, 17,917,870.28 and 8,087,606.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,979,967.33 : 17,917,870.28 = 8,087,606.64 : x
2. Step 2: Convert to fraction form
   12,979,967.33/17,917,870.28 = 8,087,606.64/x
3. Step 3: Cross multiply
   12,979,967.33x = 17,917,870.28 × 8,087,606.64
4. Step 4: Simplify right side
   12,979,967.33x = 144,912,686,610,748.59
5. Step 5: Solve for x
   x = 144,912,686,610,748.59/12,979,967.33
6. Step 6: Final answer
   x = 11,164,333.69