Finding the Fourth Proportional to 21,353,196.86, 32,029,678.62 and 5,179,116.86

Step by Step Solution

1. Step 1: Write the proportion equation
   21,353,196.86 : 32,029,678.62 = 5,179,116.86 : x
2. Step 2: Convert to fraction form
   21,353,196.86/32,029,678.62 = 5,179,116.86/x
3. Step 3: Cross multiply
   21,353,196.86x = 32,029,678.62 × 5,179,116.86
4. Step 4: Simplify right side
   21,353,196.86x = 165,885,448,401,075.16
5. Step 5: Solve for x
   x = 165,885,448,401,075.16/21,353,196.86
6. Step 6: Final answer
   x = 7,768,646.99