Finding the Fourth Proportional to 12,913,164.56, 17,820,972.96 and 7,111,944.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,913,164.56 : 17,820,972.96 = 7,111,944.68 : x
2. Step 2: Convert to fraction form
   12,913,164.56/17,820,972.96 = 7,111,944.68/x
3. Step 3: Cross multiply
   12,913,164.56x = 17,820,972.96 × 7,111,944.68
4. Step 4: Simplify right side
   12,913,164.56x = 126,741,773,835,295.86
5. Step 5: Solve for x
   x = 126,741,773,835,295.86/12,913,164.56
6. Step 6: Final answer
   x = 9,814,927.49