Finding the Fourth Proportional to 12,912,956.35, 17,820,685.38 and 7,111,736.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,912,956.35 : 17,820,685.38 = 7,111,736.62 : x
2. Step 2: Convert to fraction form
   12,912,956.35/17,820,685.38 = 7,111,736.62/x
3. Step 3: Cross multiply
   12,912,956.35x = 17,820,685.38 × 7,111,736.62
4. Step 4: Simplify right side
   12,912,956.35x = 126,736,020,810,444.61
5. Step 5: Solve for x
   x = 126,736,020,810,444.61/12,912,956.35
6. Step 6: Final answer
   x = 9,814,640.22