Finding the Fourth Proportional to 17,391,892.61, 24,010,129.78 and 13,409,465.86

Step by Step Solution

1. Step 1: Write the proportion equation
   17,391,892.61 : 24,010,129.78 = 13,409,465.86 : x
2. Step 2: Convert to fraction form
   17,391,892.61/24,010,129.78 = 13,409,465.86/x
3. Step 3: Cross multiply
   17,391,892.61x = 24,010,129.78 × 13,409,465.86
4. Step 4: Simplify right side
   17,391,892.61x = 321,963,015,575,568.31
5. Step 5: Solve for x
   x = 321,963,015,575,568.31/17,391,892.61
6. Step 6: Final answer
   x = 18,512,247.21