Finding the Fourth Proportional to 9,642,067.22, 13,306,253.39 and 5,290,899.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,642,067.22 : 13,306,253.39 = 5,290,899.50 : x
2. Step 2: Convert to fraction form
   9,642,067.22/13,306,253.39 = 5,290,899.50/x
3. Step 3: Cross multiply
   9,642,067.22x = 13,306,253.39 × 5,290,899.50
4. Step 4: Simplify right side
   9,642,067.22x = 70,402,049,315,038.55
5. Step 5: Solve for x
   x = 70,402,049,315,038.55/9,642,067.22
6. Step 6: Final answer
   x = 7,301,551.39