Finding the Fourth Proportional to 21,810,090.32, 32,721,025.56 and 6,663,608.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,810,090.32 : 32,721,025.56 = 6,663,608.72 : x
2. Step 2: Convert to fraction form
   21,810,090.32/32,721,025.56 = 6,663,608.72/x
3. Step 3: Cross multiply
   21,810,090.32x = 32,721,025.56 × 6,663,608.72
4. Step 4: Simplify right side
   21,810,090.32x = 218,040,111,248,958.88
5. Step 5: Solve for x
   x = 218,040,111,248,958.88/21,810,090.32
6. Step 6: Final answer
   x = 9,997,212.67