Finding the Fourth Proportional to 9,011,309.48, 12,435,350.72 and 5,290,080.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,011,309.48 : 12,435,350.72 = 5,290,080.74 : x
2. Step 2: Convert to fraction form
   9,011,309.48/12,435,350.72 = 5,290,080.74/x
3. Step 3: Cross multiply
   9,011,309.48x = 12,435,350.72 × 5,290,080.74
4. Step 4: Simplify right side
   9,011,309.48x = 65,784,009,339,017.14
5. Step 5: Solve for x
   x = 65,784,009,339,017.14/9,011,309.48
6. Step 6: Final answer
   x = 7,300,160.92