Finding the Fourth Proportional to 21,355,100.28, 32,019,074.82 and 18,117,753.84

Step by Step Solution

1. Step 1: Write the proportion equation
   21,355,100.28 : 32,019,074.82 = 18,117,753.84 : x
2. Step 2: Convert to fraction form
   21,355,100.28/32,019,074.82 = 18,117,753.84/x
3. Step 3: Cross multiply
   21,355,100.28x = 32,019,074.82 × 18,117,753.84
4. Step 4: Simplify right side
   21,355,100.28x = 580,113,715,773,302.25
5. Step 5: Solve for x
   x = 580,113,715,773,302.25/21,355,100.28
6. Step 6: Final answer
   x = 27,165,113.17