Finding the Fourth Proportional to 11,909,853.89, 17,865,634.72 and 4,986,366.14

Step by Step Solution

1. Step 1: Write the proportion equation
   11,909,853.89 : 17,865,634.72 = 4,986,366.14 : x
2. Step 2: Convert to fraction form
   11,909,853.89/17,865,634.72 = 4,986,366.14/x
3. Step 3: Cross multiply
   11,909,853.89x = 17,865,634.72 × 4,986,366.14
4. Step 4: Simplify right side
   11,909,853.89x = 89,084,595,935,622.30
5. Step 5: Solve for x
   x = 89,084,595,935,622.30/11,909,853.89
6. Step 6: Final answer
   x = 7,479,906.70