Finding the Fourth Proportional to 12,020,831.07, 17,988,146.00 and 10,407,150.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,020,831.07 : 17,988,146.00 = 10,407,150.42 : x
2. Step 2: Convert to fraction form
   12,020,831.07/17,988,146.00 = 10,407,150.42/x
3. Step 3: Cross multiply
   12,020,831.07x = 17,988,146.00 × 10,407,150.42
4. Step 4: Simplify right side
   12,020,831.07x = 187,205,341,146,885.56
5. Step 5: Solve for x
   x = 187,205,341,146,885.56/12,020,831.07
6. Step 6: Final answer
   x = 15,573,410.86