Finding the Fourth Proportional to 21,751,017.99, 30,007,909.37 and 12,453,619.19

Step by Step Solution

1. Step 1: Write the proportion equation
   21,751,017.99 : 30,007,909.37 = 12,453,619.19 : x
2. Step 2: Convert to fraction form
   21,751,017.99/30,007,909.37 = 12,453,619.19/x
3. Step 3: Cross multiply
   21,751,017.99x = 30,007,909.37 × 12,453,619.19
4. Step 4: Simplify right side
   21,751,017.99x = 373,707,075,793,055.75
5. Step 5: Solve for x
   x = 373,707,075,793,055.75/21,751,017.99
6. Step 6: Final answer
   x = 17,181,130.37