Finding the Fourth Proportional to 13,642,081.74, 18,825,411.71 and 7,761,162.20

Step by Step Solution

1. Step 1: Write the proportion equation
   13,642,081.74 : 18,825,411.71 = 7,761,162.20 : x
2. Step 2: Convert to fraction form
   13,642,081.74/18,825,411.71 = 7,761,162.20/x
3. Step 3: Cross multiply
   13,642,081.74x = 18,825,411.71 × 7,761,162.20
4. Step 4: Simplify right side
   13,642,081.74x = 146,107,073,688,365.19
5. Step 5: Solve for x
   x = 146,107,073,688,365.19/13,642,081.74
6. Step 6: Final answer
   x = 10,710,027.73