Finding the Fourth Proportional to 9,236,521.92, 12,746,418.72 and 5,162,140.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,236,521.92 : 12,746,418.72 = 5,162,140.80 : x
2. Step 2: Convert to fraction form
   9,236,521.92/12,746,418.72 = 5,162,140.80/x
3. Step 3: Cross multiply
   9,236,521.92x = 12,746,418.72 × 5,162,140.80
4. Step 4: Simplify right side
   9,236,521.92x = 65,798,808,128,395.77
5. Step 5: Solve for x
   x = 65,798,808,128,395.77/9,236,521.92
6. Step 6: Final answer
   x = 7,123,764.63