Finding the Fourth Proportional to 12,890,164.56, 17,788,072.01 and 7,088,945.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,890,164.56 : 17,788,072.01 = 7,088,945.69 : x
2. Step 2: Convert to fraction form
   12,890,164.56/17,788,072.01 = 7,088,945.69/x
3. Step 3: Cross multiply
   12,890,164.56x = 17,788,072.01 × 7,088,945.69
4. Step 4: Simplify right side
   12,890,164.56x = 126,098,676,284,314.03
5. Step 5: Solve for x
   x = 126,098,676,284,314.03/12,890,164.56
6. Step 6: Final answer
   x = 9,782,549.76