Finding the Fourth Proportional to 9,139,846.21, 12,612,717.15 and 5,009,789.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,139,846.21 : 12,612,717.15 = 5,009,789.05 : x
2. Step 2: Convert to fraction form
   9,139,846.21/12,612,717.15 = 5,009,789.05/x
3. Step 3: Cross multiply
   9,139,846.21x = 12,612,717.15 × 5,009,789.05
4. Step 4: Simplify right side
   9,139,846.21x = 63,187,052,268,817.20
5. Step 5: Solve for x
   x = 63,187,052,268,817.20/9,139,846.21
6. Step 6: Final answer
   x = 6,913,360.56