Finding the Fourth Proportional to 21,665,613.88, 29,881,112.94 and 19,046,518.20

Step by Step Solution

1. Step 1: Write the proportion equation
   21,665,613.88 : 29,881,112.94 = 19,046,518.20 : x
2. Step 2: Convert to fraction form
   21,665,613.88/29,881,112.94 = 19,046,518.20/x
3. Step 3: Cross multiply
   21,665,613.88x = 29,881,112.94 × 19,046,518.20
4. Step 4: Simplify right side
   21,665,613.88x = 569,131,161,447,965.50
5. Step 5: Solve for x
   x = 569,131,161,447,965.50/21,665,613.88
6. Step 6: Final answer
   x = 26,268,868.48