Finding the Fourth Proportional to 13,021,982.86, 17,969,041.56 and 7,517,131.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,021,982.86 : 17,969,041.56 = 7,517,131.18 : x
2. Step 2: Convert to fraction form
   13,021,982.86/17,969,041.56 = 7,517,131.18/x
3. Step 3: Cross multiply
   13,021,982.86x = 17,969,041.56 × 7,517,131.18
4. Step 4: Simplify right side
   13,021,982.86x = 135,075,642,585,391.83
5. Step 5: Solve for x
   x = 135,075,642,585,391.83/13,021,982.86
6. Step 6: Final answer
   x = 10,372,893.59