Finding the Fourth Proportional to 9,162,978.66, 12,644,564.13 and 5,088,860.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,162,978.66 : 12,644,564.13 = 5,088,860.10 : x
2. Step 2: Convert to fraction form
   9,162,978.66/12,644,564.13 = 5,088,860.10/x
3. Step 3: Cross multiply
   9,162,978.66x = 12,644,564.13 × 5,088,860.10
4. Step 4: Simplify right side
   9,162,978.66x = 64,346,417,883,048.21
5. Step 5: Solve for x
   x = 64,346,417,883,048.21/9,162,978.66
6. Step 6: Final answer
   x = 7,022,434.55