Finding the Fourth Proportional to 13,978,563.21, 19,290,233.32 and 7,698,969.97

Step by Step Solution

1. Step 1: Write the proportion equation
   13,978,563.21 : 19,290,233.32 = 7,698,969.97 : x
2. Step 2: Convert to fraction form
   13,978,563.21/19,290,233.32 = 7,698,969.97/x
3. Step 3: Cross multiply
   13,978,563.21x = 19,290,233.32 × 7,698,969.97
4. Step 4: Simplify right side
   13,978,563.21x = 148,514,926,977,500.38
5. Step 5: Solve for x
   x = 148,514,926,977,500.38/13,978,563.21
6. Step 6: Final answer
   x = 10,624,477.26