Finding the Fourth Proportional to 13,590,499.59, 18,754,892.51 and 7,478,928.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,590,499.59 : 18,754,892.51 = 7,478,928.09 : x
2. Step 2: Convert to fraction form
   13,590,499.59/18,754,892.51 = 7,478,928.09/x
3. Step 3: Cross multiply
   13,590,499.59x = 18,754,892.51 × 7,478,928.09
4. Step 4: Simplify right side
   13,590,499.59x = 140,266,492,380,574.95
5. Step 5: Solve for x
   x = 140,266,492,380,574.95/13,590,499.59
6. Step 6: Final answer
   x = 10,320,922.45