Finding the Fourth Proportional to 12,928,081.91, 17,840,807.05 and 7,126,736.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,928,081.91 : 17,840,807.05 = 7,126,736.36 : x
2. Step 2: Convert to fraction form
   12,928,081.91/17,840,807.05 = 7,126,736.36/x
3. Step 3: Cross multiply
   12,928,081.91x = 17,840,807.05 × 7,126,736.36
4. Step 4: Simplify right side
   12,928,081.91x = 127,146,728,294,979.34
5. Step 5: Solve for x
   x = 127,146,728,294,979.34/12,928,081.91
6. Step 6: Final answer
   x = 9,834,925.95