Finding the Fourth Proportional to 13,108,529.84, 18,091,902.02 and 7,886,815.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,108,529.84 : 18,091,902.02 = 7,886,815.83 : x
2. Step 2: Convert to fraction form
   13,108,529.84/18,091,902.02 = 7,886,815.83/x
3. Step 3: Cross multiply
   13,108,529.84x = 18,091,902.02 × 7,886,815.83
4. Step 4: Simplify right side
   13,108,529.84x = 142,687,499,206,710.91
5. Step 5: Solve for x
   x = 142,687,499,206,710.91/13,108,529.84
6. Step 6: Final answer
   x = 10,885,087.88