Finding the Fourth Proportional to 21,567,556.38, 32,351,620.59 and 7,190,628.78

Step by Step Solution

1. Step 1: Write the proportion equation
   21,567,556.38 : 32,351,620.59 = 7,190,628.78 : x
2. Step 2: Convert to fraction form
   21,567,556.38/32,351,620.59 = 7,190,628.78/x
3. Step 3: Cross multiply
   21,567,556.38x = 32,351,620.59 × 7,190,628.78
4. Step 4: Simplify right side
   21,567,556.38x = 232,628,494,094,094.59
5. Step 5: Solve for x
   x = 232,628,494,094,094.59/21,567,556.38
6. Step 6: Final answer
   x = 10,786,038.53