Finding the Fourth Proportional to 21,313,656.47, 29,406,131.59 and 13,045,098.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,313,656.47 : 29,406,131.59 = 13,045,098.82 : x
2. Step 2: Convert to fraction form
   21,313,656.47/29,406,131.59 = 13,045,098.82/x
3. Step 3: Cross multiply
   21,313,656.47x = 29,406,131.59 × 13,045,098.82
4. Step 4: Simplify right side
   21,313,656.47x = 383,605,892,505,473.75
5. Step 5: Solve for x
   x = 383,605,892,505,473.75/21,313,656.47
6. Step 6: Final answer
   x = 17,998,126.84