Finding the Fourth Proportional to 19,912,184.54, 29,871,426.09 and 7,132,406.30

Step by Step Solution

1. Step 1: Write the proportion equation
   19,912,184.54 : 29,871,426.09 = 7,132,406.30 : x
2. Step 2: Convert to fraction form
   19,912,184.54/29,871,426.09 = 7,132,406.30/x
3. Step 3: Cross multiply
   19,912,184.54x = 29,871,426.09 × 7,132,406.30
4. Step 4: Simplify right side
   19,912,184.54x = 213,055,147,634,300.38
5. Step 5: Solve for x
   x = 213,055,147,634,300.38/19,912,184.54
6. Step 6: Final answer
   x = 10,699,737.50