Finding the Fourth Proportional to 21,728,748.71, 32,561,222.01 and 10,931,208.95

Step by Step Solution

1. Step 1: Write the proportion equation
   21,728,748.71 : 32,561,222.01 = 10,931,208.95 : x
2. Step 2: Convert to fraction form
   21,728,748.71/32,561,222.01 = 10,931,208.95/x
3. Step 3: Cross multiply
   21,728,748.71x = 32,561,222.01 × 10,931,208.95
4. Step 4: Simplify right side
   21,728,748.71x = 355,933,521,458,649
5. Step 5: Solve for x
   x = 355,933,521,458,649/21,728,748.71
6. Step 6: Final answer
   x = 16,380,764.77