Finding the Fourth Proportional to 12,005,922.30, 18,009,381.69 and 3,486,258.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,005,922.30 : 18,009,381.69 = 3,486,258.72 : x
2. Step 2: Convert to fraction form
   12,005,922.30/18,009,381.69 = 3,486,258.72/x
3. Step 3: Cross multiply
   12,005,922.30x = 18,009,381.69 × 3,486,258.72
4. Step 4: Simplify right side
   12,005,922.30x = 62,785,363,958,570.84
5. Step 5: Solve for x
   x = 62,785,363,958,570.84/12,005,922.30
6. Step 6: Final answer
   x = 5,229,532.76