Finding the Fourth Proportional to 21,224,063.34, 29,280,892.77 and 13,061,129.58

Step by Step Solution

1. Step 1: Write the proportion equation
   21,224,063.34 : 29,280,892.77 = 13,061,129.58 : x
2. Step 2: Convert to fraction form
   21,224,063.34/29,280,892.77 = 13,061,129.58/x
3. Step 3: Cross multiply
   21,224,063.34x = 29,280,892.77 × 13,061,129.58
4. Step 4: Simplify right side
   21,224,063.34x = 382,441,534,687,055.12
5. Step 5: Solve for x
   x = 382,441,534,687,055.12/21,224,063.34
6. Step 6: Final answer
   x = 18,019,242.05