Finding the Fourth Proportional to 13,022,173.99, 17,970,930.06 and 7,142,042.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,022,173.99 : 17,970,930.06 = 7,142,042.27 : x
2. Step 2: Convert to fraction form
   13,022,173.99/17,970,930.06 = 7,142,042.27/x
3. Step 3: Cross multiply
   13,022,173.99x = 17,970,930.06 × 7,142,042.27
4. Step 4: Simplify right side
   13,022,173.99x = 128,349,142,183,232.45
5. Step 5: Solve for x
   x = 128,349,142,183,232.45/13,022,173.99
6. Step 6: Final answer
   x = 9,856,199.30