Finding the Fourth Proportional to 9,139,412.25, 12,612,388.91 and 5,065,293.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,139,412.25 : 12,612,388.91 = 5,065,293.69 : x
2. Step 2: Convert to fraction form
   9,139,412.25/12,612,388.91 = 5,065,293.69/x
3. Step 3: Cross multiply
   9,139,412.25x = 12,612,388.91 × 5,065,293.69
4. Step 4: Simplify right side
   9,139,412.25x = 63,885,453,936,322.51
5. Step 5: Solve for x
   x = 63,885,453,936,322.51/9,139,412.25
6. Step 6: Final answer
   x = 6,990,105.29