Finding the Fourth Proportional to 17,420,300.91, 26,128,761.71 and 5,289,869.30

Step by Step Solution

1. Step 1: Write the proportion equation
   17,420,300.91 : 26,128,761.71 = 5,289,869.30 : x
2. Step 2: Convert to fraction form
   17,420,300.91/26,128,761.71 = 5,289,869.30/x
3. Step 3: Cross multiply
   17,420,300.91x = 26,128,761.71 × 5,289,869.30
4. Step 4: Simplify right side
   17,420,300.91x = 138,217,734,259,651.34
5. Step 5: Solve for x
   x = 138,217,734,259,651.34/17,420,300.91
6. Step 6: Final answer
   x = 7,934,290.86