Finding the Fourth Proportional to 19,978,891.88, 27,570,870.81 and 10,811,534.63

Step by Step Solution

1. Step 1: Write the proportion equation
   19,978,891.88 : 27,570,870.81 = 10,811,534.63 : x
2. Step 2: Convert to fraction form
   19,978,891.88/27,570,870.81 = 10,811,534.63/x
3. Step 3: Cross multiply
   19,978,891.88x = 27,570,870.81 × 10,811,534.63
4. Step 4: Simplify right side
   19,978,891.88x = 298,083,424,403,716.81
5. Step 5: Solve for x
   x = 298,083,424,403,716.81/19,978,891.88
6. Step 6: Final answer
   x = 14,919,917.79